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Made libz, libbz2 and libgdbm optional.
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
302a2600 3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
d3372da9 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19#include <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
d3372da9 22#include <unistd.h>
23#include <fcntl.h>
24#include <string.h>
25#include <netinet/in.h>
26#include <arpa/inet.h>
d3372da9 27#include <wctype.h>
28#include <time.h>
29#include <errno.h>
30#include <bzlib.h>
31#include <zlib.h>
32#include <sys/stat.h>
33
34#ifdef HAVE_CONFIG_H
35#include <config.h>
36#endif
37#include "filenet.h"
38#include "log.h"
39#include "module.h"
40#include "utils.h"
41#include "client.h"
42#include "transfer.h"
43#include "sysevents.h"
44#include "net.h"
8b17e919 45#include <tiger.h>
d3372da9 46
47/*
48 * The Direct Connect protocol is extremely ugly. Thus, this code must
49 * also be a bit ugly in certain places. Please forgive me. =/
50 *
51 * This also means that there might be some pieces of the code that
52 * look completely illogical to you, and you think that you may make
53 * them much neater/better. However, in many cases it might just be
54 * that it's required to cope with some oddity of the protocol, such
55 * as the amazingly ugly delayed key response in the peer protocol.
56 */
57
58/* I assume this is the correct character set to use for DC,
59 * considering it was developed without i18n support under Windows */
60#define DCCHARSET "windows-1252"
61
62#ifdef DCPP_MASQUERADE
63/*
64 * I honestly don't want to pretend being a client that I'm not, but
65 * there are so many hubs that simply do not accept any clients
66 * outside their whitelists, for no obvious reasons, so I feel that I
67 * am left with little choice. Anyhow, as long as I actually support
68 * all the features that my faked DC++ version does, there should be
69 * very little harm done.
70 */
71#define DCIDTAG "++"
72#define DCIDTAGV "0.674"
73#define DCIDFULL "DC++ 0.674"
74#else
75#define DCIDTAG "Dolda"
76#define DCIDTAGV VERSION
77#define DCIDFULL "DoldaConnect " VERSION
78#endif
79
80#define PEER_CMD 0
9a2d6cb8 81#define PEER_STOP 1
82#define PEER_TRNS 2
83#define PEER_SYNC 3
84#define PEER_TTHL 4
d3372da9 85
86#define CPRS_NONE 0
87#define CPRS_ZLIB 1
88
89struct command
90{
91 char *name;
92 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 93 int stop;
d3372da9 94};
95
96struct qcommand
97{
98 struct qcommand *next;
99 char *string;
100};
101
102struct dchub
103{
ffa81d5f 104 struct socket *sk;
d3372da9 105 char *inbuf;
106 size_t inbufdata, inbufsize;
107 struct qcommand *queue;
1c4b02cd 108 int extended, dcppemu;
1d85f24b 109 char *charset;
d3372da9 110 char *nativename;
111 char *nativenick;
08b74f8c 112 char **supports;
d3372da9 113};
114
115struct dcexppeer
116{
117 struct dcexppeer *next, *prev;
118 char *nick;
119 struct fnetnode *fn;
120 struct timer *expire;
121};
122
123struct dcpeer
124{
125 struct dcpeer *next, *prev;
126 struct socket *sk;
127 struct fnetnode *fn;
128 char *inbuf;
129 size_t inbufdata, inbufsize;
9a2d6cb8 130 size_t curread, totalsize;
d3372da9 131 int freeing;
1e9d82b1 132 struct timer *timeout;
d3372da9 133 struct qcommand *queue;
134 struct transfer *transfer;
135 int state;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 138 int extended, dcppemu;
d3372da9 139 int direction; /* Using the constants from transfer.h */
140 int compress;
df873cd0 141 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 142 struct tigertreehash tth;
1d85f24b 143 char *charset;
d3372da9 144 void *cprsdata;
d3372da9 145 char *key;
146 char *nativename;
147 char **supports;
148 wchar_t *wcsname;
149};
150
151static struct fnet dcnet;
152static struct transferiface dctransfer;
153static struct socket *udpsock = NULL;
154static struct socket *tcpsock = NULL;
155static struct dcpeer *peers = NULL;
156int numdcpeers = 0;
157static struct dcexppeer *expected = NULL;
158static char *hmlistname = NULL;
159static char *xmllistname = NULL;
160static char *xmlbz2listname = NULL;
6305c428 161static struct timer *listwritetimer = NULL;
d3372da9 162
cab0b442 163static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
d3372da9 164static void freedcpeer(struct dcpeer *peer);
cab0b442 165static void transread(struct socket *sk, struct dcpeer *peer);
166static void transerr(struct socket *sk, int err, struct dcpeer *peer);
167static void transwrite(struct socket *sk, struct dcpeer *peer);
d3372da9 168static void updatehmlist(void);
169static void updatexmllist(void);
170static void updatexmlbz2list(void);
9a2d6cb8 171static void requestfile(struct dcpeer *peer);
6305c428 172static void updatelists(int now);
d3372da9 173
174static int reservedchar(unsigned char c)
175{
176 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
177}
178
179/* Oh, how I despise having to do this... */
180static char *dcmakekey(char *lock)
181{
182 int i, len, offset;
183 char *buf, *key;
184 char save;
185
186 buf = smalloc(strlen(lock));
187 save = 5;
188 len = 0;
189 for(i = 0; lock[i]; i++)
190 {
191 buf[i] = lock[i] ^ save;
192 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
193 save = lock[i];
194 if((i != 0) && reservedchar(buf[i]))
195 len += 10;
196 else
197 len++;
198 }
199 buf[0] ^= buf[i - 1];
200 if(reservedchar(buf[0]))
201 len += 10;
202 else
203 len++;
204 key = smalloc(len + 1);
205 offset = 0;
206 for(i = 0; lock[i] != 0; i++)
207 {
208 if(reservedchar(buf[i]))
209 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
210 else
211 key[offset++] = buf[i];
212 }
213 key[offset] = 0;
214 free(buf);
215 return(key);
216}
217
9a2d6cb8 218static char *pathnmdc2adc(char *path)
219{
220 char *ret;
221 size_t retsize, retdata;
222
223 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
224 return(sstrdup(path));
225 ret = NULL;
226 retsize = retdata = 0;
227 addtobuf(ret, '/');
228 for(; *path; path++)
229 {
230 if(*path == '\\')
231 addtobuf(ret, '/');
232 else
233 addtobuf(ret, *path);
234 }
235 addtobuf(ret, 0);
236 return(ret);
237}
238
239static int isdchash(struct hash *hash)
240{
241 if(wcscmp(hash->algo, L"TTH"))
242 return(0);
243 if(hash->len != 24)
244 return(0);
245 return(1);
246}
247
08b74f8c
FT		 248/*
249 * Uncomment when used!
250
251static int hubsupports(struct dchub *hub, char *cap)
252{
253 char **p;
254
255 if(hub->supports == NULL)
256 return(0);
257 for(p = hub->supports; *p != NULL; p++)
258 {
259 if(!strcasecmp(*p, cap))
260 return(1);
261 }
262 return(0);
263}
264*/
265
9a2d6cb8 266static int supports(struct dcpeer *peer, char *cap)
267{
268 char **p;
269
270 if(peer->supports == NULL)
271 return(0);
272 for(p = peer->supports; *p != NULL; p++)
273 {
274 if(!strcasecmp(*p, cap))
275 return(1);
276 }
277 return(0);
278}
279
d3372da9 280static void endcompress(struct dcpeer *peer)
281{
282 if(peer->compress == CPRS_ZLIB)
283 {
284 deflateEnd(peer->cprsdata);
285 free(peer->cprsdata);
286 }
287 peer->compress = CPRS_NONE;
288}
289
290static void initcompress(struct dcpeer *peer, int algo)
291{
292 int ret;
293
294 endcompress(peer);
295 peer->compress = algo;
296 if(algo == CPRS_ZLIB)
297 {
298 peer->cprsdata = smalloc(sizeof(z_stream));
299 memset(peer->cprsdata, 0, sizeof(z_stream));
300 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
301 {
302 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
303 abort();
304 }
305 }
306}
307
308static void unquote(wchar_t *in)
309{
310 wchar_t *p, *p2, nc;
311
312 for(p = in; *p != L'\0'; p++)
313 {
314 if(*p == L'&')
315 {
316 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
317 if(*p2 == L'&')
318 continue;
319 if(*p2 == L'\0')
320 return;
321 *p2 = L'\0';
322 nc = L'\0';
323 if(!wcscmp(p + 1, L"amp"))
324 {
325 nc = L'&';
326 } else if(p[1] == L'#') {
327 nc = ucptowc(wcstol(p + 2, NULL, 10));
328 }
329 if(nc == L'\0')
330 {
331 *p2 = L';';
332 p = p2;
333 continue;
334 }
335 *p = nc;
336 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
337 }
338 }
339}
340
341static void freeexppeer(struct dcexppeer *ep)
342{
343 if(ep->next != NULL)
344 ep->next->prev = ep->prev;
345 if(ep->prev != NULL)
346 ep->prev->next = ep->next;
347 if(ep == expected)
348 expected = ep->next;
349 free(ep->nick);
350 putfnetnode(ep->fn);
351 if(ep->expire != NULL)
352 canceltimer(ep->expire);
353 free(ep);
354}
355
356static void exppeerexpire(int cancelled, struct dcexppeer *ep)
357{
358 ep->expire = NULL;
359 if(!cancelled)
360 freeexppeer(ep);
361}
362
363static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
364{
365 struct dcexppeer *ep;
366
367 ep = smalloc(sizeof(*ep));
368 ep->nick = sstrdup(nick);
369 getfnetnode(ep->fn = fn);
370 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
371 ep->next = expected;
372 ep->prev = NULL;
373 if(expected != NULL)
374 expected->prev = ep;
375 expected = ep;
376 return(ep);
377}
378
379static struct qcommand *newqcmd(struct qcommand **queue, char *string)
380{
381 struct qcommand *new;
382
383 while(*queue != NULL)
384 queue = &(*queue)->next;
385 new = smalloc(sizeof(*new));
386 new->string = sstrdup(string);
387 new->next = *queue;
388 *queue = new;
389 return(new);
390}
391
392static struct qcommand *ulqcmd(struct qcommand **queue)
393{
394 struct qcommand *qcmd;
395
396 if((qcmd = *queue) == NULL)
397 return(NULL);
398 *queue = qcmd->next;
399 return(qcmd);
400}
401
402static void freeqcmd(struct qcommand *qcmd)
403{
404 free(qcmd->string);
405 free(qcmd);
406}
407
408static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
409{
410 wchar_t *chat, *wfrom, *wpeer;
411 char *p, *end;
412 struct fnetpeer *peer;
1d85f24b 413 struct dchub *hub;
d3372da9 414
1d85f24b 415 hub = fn->data;
d3372da9 416 end = string + strlen(string);
417 while((p = strchr(string, 13)) != NULL)
418 memmove(p, p + 1, (end-- - p));
419 if(from != NULL)
420 {
421 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
422 string += strlen(from) + 2;
1d85f24b 423 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 424 return;
425 wpeer = swcsdup(wfrom);
426 } else {
427 wfrom = NULL;
428 wpeer = NULL;
429 if(*string == '<')
430 {
431 for(p = string + 1; *p; p++)
432 {
433 if((*p == ' ') || (*p == '>'))
434 break;
435 }
436 if(*p == '>')
437 {
438 *(p++) = 0;
439 if(*p == ' ')
440 p++;
1d85f24b 441 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 442 return;
443 string = p;
444 }
445 }
446 if(wpeer == NULL)
447 wpeer = swcsdup(L"");
448 }
1d85f24b 449 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 450 {
451 if(wfrom != NULL)
452 free(wfrom);
453 free(wpeer);
454 return;
455 }
456 unquote(chat);
457 if(wfrom != NULL)
458 {
459 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
460 fnethandlechat(fn, 1, wfrom, wpeer, chat);
461 else
462 fnethandlechat(fn, 0, wfrom, wpeer, chat);
463 } else {
464 fnethandlechat(fn, 1, L"", wpeer, chat);
465 }
466 if(wfrom != NULL)
467 free(wfrom);
468 free(wpeer);
469 free(chat);
470}
471
1e9d82b1 472static void peertimeout(int cancelled, struct dcpeer *peer)
473{
474 peer->timeout = NULL;
475 if(cancelled)
476 return;
477 freedcpeer(peer);
478}
479
d3372da9 480static void sendadc(struct socket *sk, char *arg)
481{
482 char *buf;
483 size_t bufsize, bufdata;
484
485 buf = NULL;
486 bufsize = bufdata = 0;
487 addtobuf(buf, ' ');
488 for(; *arg; arg++)
489 {
490 if(*arg == ' ')
491 {
492 bufcat(buf, "\\s", 2);
493 } else if(*arg == '\n') {
494 bufcat(buf, "\\n", 2);
495 } else if(*arg == '\\') {
496 bufcat(buf, "\\\\", 2);
497 } else {
498 addtobuf(buf, *arg);
499 }
500 }
501 sockqueue(sk, buf, bufdata);
502 free(buf);
503}
504
505static void sendadcf(struct socket *sk, char *arg, ...)
506{
507 char *buf;
508 va_list args;
509
510 va_start(args, arg);
511 buf = vsprintf2(arg, args);
512 va_end(args);
513 if(buf == NULL)
514 return;
515 sendadc(sk, buf);
516 free(buf);
517}
518
519static char **parseadc(char *args)
520{
521 char **retbuf;
522 size_t retbufsize, retbufdata;
523 char *buf;
524 size_t bufsize, bufdata;
525 int state;
526
527 retbuf = NULL;
528 buf = NULL;
529 retbufsize = retbufdata = bufsize = bufdata = 0;
530 state = 0;
531 while(state != 3)
532 {
533 switch(state)
534 {
535 case 0:
536 if(*args == 0)
537 state = 3;
538 else if(*args != ' ')
539 state = 1;
540 break;
541 case 1:
542 if((*args == ' ') || (*args == 0))
543 {
544 addtobuf(buf, 0);
545 addtobuf(retbuf, buf);
546 buf = NULL;
547 bufsize = bufdata = 0;
548 if(*args == 0)
549 state = 3;
550 } else if(*args == '\\') {
551 state = 2;
552 } else {
553 addtobuf(buf, *args);
554 }
555 args++;
556 break;
557 case 2:
558 if(*args == 0)
559 {
560 if(buf != NULL)
561 free(buf);
562 addtobuf(retbuf, NULL);
563 freeparr(retbuf);
564 return(NULL);
f24d5cfb 565 } else if((*args == 's') || (*args == ' ')) {
d3372da9 566 addtobuf(buf, ' ');
567 } else if(*args == 'n') {
568 addtobuf(buf, '\n');
569 } else if(*args == '\\') {
570 addtobuf(buf, '\\');
571 }
a478552c 572 args++;
d3372da9 573 state = 1;
a478552c 574 break;
d3372da9 575 }
576 }
577 if(buf != NULL)
578 free(buf);
579 addtobuf(retbuf, NULL);
580 return(retbuf);
581}
582
583/* Macros useful in command handlers */
584#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
585#define qstr(sk, str) sockqueue(sk, str, strlen(str))
586#define qstrf(sk, strandargs...) \
587do { \
588 char *__buf__; \
589 if((__buf__ = sprintf2(strandargs)) != NULL) { \
590 sockqueue(sk, __buf__, strlen(__buf__)); \
591 free(__buf__); \
592 } \
593} while(0)
594
595static char *tr(char *str, char *trans)
596{
597 char *p;
598
599 for(; *trans; trans += 2)
600 {
601 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
602 *p = trans[1];
603 }
604 return(str);
605}
606
9a2d6cb8 607static char *getadcid(struct dcpeer *peer)
608{
609 char *buf;
610 char *ret;
d57f938a 611 int isfilelist;
9a2d6cb8 612
2a157d1a 613 isfilelist = 0;
d57f938a 614 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
615 isfilelist = 1;
616 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 617 {
618 buf = base32encode(peer->transfer->hash->buf, 24);
619 ret = sprintf2("TTH/%.39s", buf);
620 free(buf);
621 } else {
622 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
623 return(NULL);
624 ret = pathnmdc2adc(buf);
625 free(buf);
626 }
627 return(ret);
628}
629
630
d3372da9 631static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
632{
633 if(!wcscmp(cmd, L"resume"))
634 {
635 if(arg == NULL)
636 {
637 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
638 freedcpeer(peer);
639 } else {
640 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 641 peer->hascurpos = 1;
642 requestfile(peer);
d3372da9 643 }
d3372da9 644 return(1);
645 }
646 return(0);
647}
648
9a2d6cb8 649static void sendmynick(struct dcpeer *peer)
d3372da9 650{
1d85f24b 651 struct fnetnode *fn;
d3372da9 652
1d85f24b 653 fn = peer->fn;
654 if(fn == NULL)
655 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 656 else
1d85f24b 657 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 658}
659
660static void sendpeerlock(struct dcpeer *peer)
661{
1c4b02cd 662 if(peer->dcppemu)
663 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
664 else
665 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 666}
667
668static void sendsupports(struct dcpeer *peer)
669{
1c4b02cd 670 if(peer->dcppemu)
671 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
672 else
673 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 674}
675
676static void requestfile(struct dcpeer *peer)
677{
678 char *buf;
679
680 if(peer->transfer->size == -1)
d3372da9 681 {
1d85f24b 682 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 683 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 684 {
9a2d6cb8 685 transferseterror(peer->transfer, TRNSE_NOTFOUND);
686 freedcpeer(peer);
d3372da9 687 return;
688 }
9a2d6cb8 689 /* The transfer will be restarted later from
690 * cmd_filelength when it detects that the sizes
691 * don't match. */
692 qstrf(peer->sk, "$Get %s$1|", buf);
693 return;
d3372da9 694 }
9a2d6cb8 695 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 696 {
9a2d6cb8 697 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 698 {
9a2d6cb8 699 qstr(peer->sk, "$ADCGET");
700 sendadc(peer->sk, "tthl");
701 if((buf = getadcid(peer)) == NULL)
d3372da9 702 {
9a2d6cb8 703 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 704 freedcpeer(peer);
705 return;
706 }
9a2d6cb8 707 sendadc(peer->sk, buf);
708 free(buf);
709 sendadc(peer->sk, "0");
710 sendadc(peer->sk, "-1");
711 qstr(peer->sk, "|");
df873cd0 712 peer->fetchingtthl = 1;
9a2d6cb8 713 return;
714 }
715 }
716 if(!peer->hascurpos)
717 {
718 if(forkfilter(peer->transfer))
719 {
720 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
721 freedcpeer(peer);
722 return;
d3372da9 723 }
9a2d6cb8 724 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
725 return;
726 }
727 if(supports(peer, "adcget"))
728 {
729 qstr(peer->sk, "$ADCGET");
730 sendadc(peer->sk, "file");
731 if((buf = getadcid(peer)) == NULL)
732 {
733 transferseterror(peer->transfer, TRNSE_NOTFOUND);
734 freedcpeer(peer);
735 return;
736 }
737 sendadc(peer->sk, buf);
738 free(buf);
739 sendadcf(peer->sk, "%i", peer->transfer->curpos);
740 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
741 qstr(peer->sk, "|");
742 } else if(supports(peer, "xmlbzlist")) {
743 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
744 {
745 transferseterror(peer->transfer, TRNSE_NOTFOUND);
746 freedcpeer(peer);
747 return;
748 }
d93b5c2f 749 qstrf(peer->sk, "$UGetBlock %zi %zi %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 750 } else {
1d85f24b 751 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 752 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 753 {
9a2d6cb8 754 transferseterror(peer->transfer, TRNSE_NOTFOUND);
755 freedcpeer(peer);
756 return;
d3372da9 757 }
d93b5c2f 758 qstrf(peer->sk, "$Get %s$%zi|", buf, peer->transfer->curpos + 1);
d3372da9 759 }
760}
761
762static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
763{
764 struct dchub *hub;
765 char *buf;
766 struct fnetnode *cfn;
69757b8c 767 int hn1, hn2, hn3;
d3372da9 768
769 hub = fn->data;
770 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 771 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 772 qstrf(sk, "%s", buf);
69757b8c 773 hn1 = hn2 = hn3 = 0;
d3372da9 774 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
775 {
776 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 777 {
778 if(cfn->regstatus == FNNS_OP)
779 hn3++;
780 else if(cfn->regstatus == FNNS_REG)
781 hn2++;
782 else
783 hn1++;
784 }
d3372da9 785 }
69757b8c 786 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 787 (hub->dcppemu)?"++":"Dolda",
788 (hub->dcppemu)?"0.674":VERSION,
d3372da9 789 (tcpsock == NULL)?'P':'A',
69757b8c 790 hn1, hn2, hn3,
d3372da9 791 confgetint("transfer", "slots")
792 );
793 qstrf(sk, "$ $");
1d85f24b 794 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 795 qstrf(sk, "%s\x01$", buf);
1d85f24b 796 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 797 qstrf(sk, "%s$", buf);
798 qstrf(sk, "%llu$|", sharesize);
799}
800
801static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
802{
803 struct dchub *hub;
804
805 hub = fn->data;
806 if(!strcmp(cmd, "$Lock"))
807 {
808 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
809 } else if(!strcmp(cmd, "$Hello")) {
810 if(fn->state == FNN_HS)
811 {
812 qstrf(sk, "$Version 1,0091|");
813 qstrf(sk, "$GetNickList|");
814 sendmyinfo(sk, fn);
815 fnetsetstate(fn, FNN_EST);
816 } else {
817 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
818 }
819 }
820}
821
822static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
823{
824 struct dchub *hub;
825 char *key;
826 char *p;
827
828 hub = fn->data;
829 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
830 hub->extended = 1;
831 if((p = strchr(args, ' ')) != NULL)
832 *(p++) = 0;
833 if(hub->extended)
834 {
1c4b02cd 835 if(hub->dcppemu)
836 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
837 else
838 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 839 }
840 key = dcmakekey(args);
841 qstrf(sk, "$Key %s|", key);
842 free(key);
843 hubhandleaction(sk, fn, cmd, args);
844}
845
846static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
847{
848 wchar_t *buf;
849 struct dchub *hub;
850
851 hub = fn->data;
852 if(hub->nativename == NULL)
853 free(hub->nativename);
854 hub->nativename = sstrdup(args);
1d85f24b 855 buf = icmbstowcs(args, hub->charset);
d3372da9 856 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
857 if(buf != NULL)
858 free(buf);
859 hubhandleaction(sk, fn, cmd, args);
860}
861
862static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
863{
864 wchar_t *nick;
865 struct dchub *hub;
866
867 hub = fn->data;
1d85f24b 868 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 869 return;
870 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
871 fnetaddpeer(fn, nick, nick);
872 free(nick);
873 hubhandleaction(sk, fn, cmd, args);
874}
875
876static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
877{
878 wchar_t *nick;
879 struct fnetpeer *peer;
880 struct dchub *hub;
881
882 hub = fn->data;
1d85f24b 883 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 884 return;
885 if((peer = fnetfindpeer(fn, nick)) != NULL)
886 fnetdelpeer(peer);
887 free(nick);
888 hubhandleaction(sk, fn, cmd, args);
889}
890
891static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
892{
893 struct dchub *hub;
894 char *p;
895 wchar_t *buf;
896 struct fnetpeer *peer, *npeer;
897
898 hub = fn->data;
899 for(peer = fn->peers; peer != NULL; peer = peer->next)
900 peer->flags.b.delete = 1;
901 while((p = strstr(args, "$$")) != NULL)
902 {
903 *p = 0;
1d85f24b 904 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 905 {
906 if((peer = fnetfindpeer(fn, buf)) == NULL)
907 peer = fnetaddpeer(fn, buf, buf);
908 else
909 peer->flags.b.delete = 0;
910 free(buf);
911 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
912 }
913 args = p + 2;
914 }
915 for(peer = fn->peers; peer != NULL; peer = npeer)
916 {
917 npeer = peer->next;
918 if(peer->flags.b.delete)
919 fnetdelpeer(peer);
920 }
921 hubhandleaction(sk, fn, cmd, args);
922}
923
924static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
925{
926 struct dchub *hub;
927 char *p;
928 wchar_t *buf;
929 struct fnetpeer *peer;
930
931 hub = fn->data;
932 for(peer = fn->peers; peer != NULL; peer = peer->next)
933 peer->flags.b.op = 0;
934 while((p = strstr(args, "$$")) != NULL)
935 {
936 *p = 0;
1d85f24b 937 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 938 {
939 if((peer = fnetfindpeer(fn, buf)) != NULL)
940 peer->flags.b.op = 1;
941 free(buf);
942 }
943 args = p + 2;
944 }
945 hubhandleaction(sk, fn, cmd, args);
946}
947
948static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
949{
950 char *p, *p2;
951 wchar_t *buf, *wp, *wp2;
952 wchar_t abuf[10];
953 struct fnetpeer *peer;
954 struct dchub *hub;
955
956 hub = fn->data;
957 p = args;
958 if(strncmp(p, "$ALL ", 5))
959 return;
960 p += 5;
961 if((p2 = strchr(p, ' ')) == NULL)
962 return;
963 *p2 = 0;
1d85f24b 964 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 965 return;
966 if((peer = fnetfindpeer(fn, buf)) == NULL)
967 peer = fnetaddpeer(fn, buf, buf);
968 free(buf);
969 p = p2 + 1;
970 if((p2 = strstr(p, "$ $")) == NULL)
971 return;
972 *p2 = 0;
1d85f24b 973 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 974 return;
316e9a13 975 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 976 {
977 buf[wcslen(buf) - 1] = L'\0';
978 *(wp++) = L'\0';
979 if((wp2 = wcschr(wp, L' ')) != NULL)
980 {
981 *(wp2++) = L'\0';
982 fnetpeersetstr(peer, L"dc-client", wp);
983 wp = wp2;
984 do
985 {
986 if((wp2 = wcschr(wp, L',')) != NULL)
987 *(wp2++) = L'\0';
988 if(wp[1] != L':')
989 continue;
990 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
991 fnetpeersetstr(peer, abuf, wp + 2);
992 wp = wp2;
993 } while(wp2 != NULL);
994 }
995 }
996 fnetpeersetstr(peer, L"descr", buf);
997 free(buf);
998 p = p2 + 3;
999 if((p2 = strchr(p, '$')) == NULL)
1000 return;
1001 *(p2 - 1) = 0;
1d85f24b 1002 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1003 return;
1004 fnetpeersetstr(peer, L"dc-speed", buf);
1005 free(buf);
1006 p = p2 + 1;
1007 if((p2 = strchr(p, '$')) == NULL)
1008 return;
1009 *p2 = 0;
1d85f24b 1010 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1011 return;
1012 fnetpeersetstr(peer, L"email", buf);
1013 free(buf);
1014 p = p2 + 1;
1015 if(strlen(p) < 1)
1016 return;
1017 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1018 hubhandleaction(sk, fn, cmd, args);
1019}
1020
1021/* I do not implement the fully in that I do not disconnect from the
1022 * old hub. I do this since I believe that if the hub owner really
1023 * wants to get rid of us, then it is his responsibility to disconnect
1024 * us. */
1025static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1026{
1027 struct dchub *hub;
1028 struct fnetnode *newfn;
1029 int freeargs;
1030
1031 hub = fn->data;
1032 if(strchr(args, ':') == NULL)
1033 {
1034 args = strcpy(smalloc(strlen(args) + 5), args);
1035 strcat(args, ":411");
1036 freeargs = 1;
1037 } else {
1038 freeargs = 0;
1039 }
a3a4a3a7 1040 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1041 {
1042 linkfnetnode(newfn);
1043 putfnetnode(newfn);
1044 }
1045 hubhandleaction(sk, fn, cmd, args);
1046 if(freeargs)
1047 free(args);
1048}
1049
1d85f24b 1050static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1051{
1052 char *buf, *buf2;
1053 size_t len, len2;
1054
1055 if(node->parent == NULL)
1056 return(NULL);
1057 if(node->parent == shareroot)
1058 {
1d85f24b 1059 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1060 return(NULL);
1061 if(retlen != NULL)
1062 *retlen = strlen(buf);
1063 return(buf);
1064 } else {
1d85f24b 1065 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1066 return(NULL);
1d85f24b 1067 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1068 {
1069 free(buf2);
1070 return(NULL);
1071 }
1072 len2 = strlen(buf2);
1073 buf = srealloc(buf, len + 1 + len2 + 1);
1074 buf[len++] = '\\';
1075 strcpy(buf + len, buf2);
1076 buf[len + len2] = 0;
1077 free(buf2);
1078 if(retlen != NULL)
1079 *retlen = len + len2;
1080 return(buf);
1081 }
1082}
1083
1084/*
1085 * This is the main share searching function for Direct Connect
1086 * peers. Feel free to optimize it if you feel the need for it. I
1087 * haven't ever seen it take any noticable CPU time anyway, so I
1088 * haven't felt that need.
1089 *
1090 * It may feel dubious to just return the directory when all terms are
1091 * satisfied rather than all the files in it, but it really benefits
1092 * everyone: Less cycles used for us, less UDP squelching for active
1093 * searchers, and less bandwidth waste for hubs when serving passive
1094 * searchers.
1095 */
1096static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1097{
1098 int i, done;
1099 struct dchub *hub;
1100 char *p, *p2;
1101 char *prefix, *infix, *postfix, *buf, *buf2;
1102 struct socket *dsk;
1103 struct sockaddr_in addr;
1104 struct sharecache *node;
1105 int minsize, maxsize;
c7185019 1106 int dotth;
1107 size_t buflen;
d3372da9 1108 int termnum, satisfied, skipcheck;
1109 int level, tersat[32];
1110 wchar_t *terms[32];
1111 char hashtth[24];
1112
1113 hub = fn->data;
1114 if((p = strchr(args, ' ')) == NULL)
1115 return;
1116 *(p++) = 0;
1117
1118 memset(terms, 0, sizeof(terms));
1119 prefix = infix = postfix = NULL;
1120 dsk = NULL;
1121 dotth = 0;
1122
1123 if(!strncmp(args, "Hub:", 4))
1124 {
1125 if(!strcmp(cmd, "$MultiSearch"))
1126 goto out;
1127 if(!strcmp(args + 4, hub->nativenick))
1128 goto out;
1129 prefix = sprintf2("$SR %s ", hub->nativenick);
1130 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1131 postfix = sprintf2(" (%s)\005%s|", formataddress(hub->sk->remote, hub->sk->remotelen), args + 4);
d3372da9 1132 dsk = sk;
1133 getsock(dsk);
1134 } else {
1135 if((p2 = strchr(args, ':')) == NULL)
1136 goto out;
1137 *(p2++) = 0;
1138 addr.sin_family = AF_INET;
1139 if(!inet_aton(args, &addr.sin_addr))
1140 goto out;
1141 addr.sin_port = htons(atoi(p2));
1142 prefix = sprintf2("$SR %s ", hub->nativenick);
1143 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1144 postfix = sprintf2(" (%s)|", formataddress(hub->sk->remote, hub->sk->remotelen));
d3372da9 1145 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1146 }
1147
1148 minsize = maxsize = -1;
1149 if(*p == 0)
1150 goto out;
1151 if(*(p++) == 'T')
1152 minsize = 0;
1153 if(*(p++) != '?')
1154 goto out;
1155 if(*p == 0)
1156 goto out;
9d8cf743 1157 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1158 {
1159 maxsize = 0;
1160 minsize = -1;
1161 }
1162 if(*(p++) != '?')
1163 goto out;
1164 if((p2 = strchr(p, '?')) == NULL)
1165 goto out;
1166 *(p2++) = 0;
1167 if(minsize == 0)
1168 minsize = atoi(p);
1169 if(maxsize == 0)
1170 maxsize = atoi(p);
1171 p = p2 + 1;
1172 if(*(p++) != '?')
1173 goto out;
1174 termnum = 0;
1175 p2 = p;
1176 done = 0;
1177 while(!done)
1178 {
1179 if((*p2 == 0) || (*p2 == '$'))
1180 {
1181 if(*p2 == 0)
1182 done = 1;
1183 else
1184 *p2 = 0;
1185 if(*p)
1186 {
1187 if(!dotth && !strncmp(p, "TTH:", 4))
1188 {
1189 dotth = 1;
2dd01e6e 1190 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1191 {
1192 free(buf);
d3372da9 1193 goto out;
2dd01e6e 1194 }
d3372da9 1195 memcpy(hashtth, buf, 24);
1196 free(buf);
1197 } else {
1d85f24b 1198 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1199 termnum++;
1200 }
1201 }
1202 p = p2 + 1;
1203 if(termnum == 32)
1204 break;
1205 }
1206 p2++;
1207 }
1208
1209 node = shareroot->child;
1210 level = 0;
1211 for(i = 0; i < termnum; i++)
1212 tersat[i] = -1;
1213 satisfied = 0;
1214 while(1)
1215 {
1216 skipcheck = 0;
1217 if(node->f.b.type == FILE_REG)
1218 {
1219 if((minsize >= 0) && (node->size < minsize))
1220 skipcheck = 1;
1221 if((maxsize >= 0) && (node->size > maxsize))
1222 skipcheck = 1;
1223 }
1224 if(!skipcheck && dotth)
1225 {
1226 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1227 skipcheck = 1;
1228 }
1229 if(!skipcheck)
1230 {
1231 for(i = 0; i < termnum; i++)
1232 {
1233 if(tersat[i] >= 0)
1234 continue;
1235 if(wcsexists(node->name, terms[i]))
1236 {
1237 tersat[i] = level;
1238 satisfied++;
1239 } else if(node->child == NULL) {
1240 break;
1241 }
1242 }
1243 }
1244 if(!skipcheck && (satisfied == termnum))
1245 {
1d85f24b 1246 /* Use DCCHARSET in $Get paths until further researched... */
1247 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1248 {
1249 if(node->f.b.hastth)
1250 {
1251 buf2 = base32encode(node->hashtth, 24);
d93b5c2f 1252 qstrf(dsk, "%s%s\005%zi%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
d3372da9 1253 free(buf2);
1254 } else {
d93b5c2f 1255 qstrf(dsk, "%s%s\005%zi%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
d3372da9 1256 }
1257 free(buf);
1258 }
1259 }
1260 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1261 {
1262 while(node->next == NULL)
1263 {
1264 if((node = node->parent) == shareroot)
1265 break;
1266 level--;
1267 }
1268 if(node == shareroot)
1269 break;
1270 for(i = 0; i < termnum; i++)
1271 {
1272 if(tersat[i] >= level)
1273 {
1274 tersat[i] = -1;
1275 satisfied--;
1276 }
1277 }
1278 node = node->next;
1279 } else {
1280 node = node->child;
1281 level++;
1282 }
1283 }
1284
1285 hubhandleaction(sk, fn, cmd, args);
1286
1287 out:
1288 if(dsk != NULL)
1289 putsock(dsk);
1290 if(prefix != NULL)
1291 free(prefix);
1292 if(infix != NULL)
1293 free(infix);
1294 if(postfix != NULL)
1295 free(postfix);
1296 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1297 free(terms[i]);
1298}
1299
1300static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1301{
1302 char *p;
1303 struct dchub *hub;
1304 struct socket *newsk;
1305 struct sockaddr_in addr;
1306
1307 hub = fn->data;
1308 if((p = strchr(args, ' ')) == NULL)
1309 return;
1310 *(p++) = 0;
1311 if(strcmp(args, hub->nativenick))
1312 return;
1313 addr.sin_family = AF_INET;
1314 args = p;
1315 if((p = strchr(args, ':')) == NULL)
1316 return;
1317 *(p++) = 0;
1318 addr.sin_port = htons(atoi(p));
1319 if(!inet_aton(args, &addr.sin_addr))
1320 return;
cab0b442 1321 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
d3372da9 1322 getfnetnode(fn);
1323 hubhandleaction(sk, fn, cmd, args);
1324}
1325
1326static void sendctm(struct socket *sk, char *nick)
1327{
1328 struct sockaddr *addr;
1329 socklen_t addrlen;
1330
1331 if(tcpsock == NULL)
1332 return;
9b5acc18 1333 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1334 return;
1335 if(addr->sa_family == AF_INET)
1336 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1337 else
1338 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1339 free(addr);
1340}
1341
1342static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1343{
1344 struct dchub *hub;
1345 char *p;
1346
1347 hub = fn->data;
1348 if((p = strchr(args, ' ')) == NULL)
1349 return;
1350 *(p++) = 0;
1351 if(strcmp(p, hub->nativenick))
1352 return;
1353 sendctm(sk, args);
1354 expectpeer(args, fn);
1355 hubhandleaction(sk, fn, cmd, args);
1356}
1357
1358static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1359{
1360 struct dchub *hub;
1361 struct fnetnode *node;
1362 int numhubs;
1363
1364 hub = fn->data;
1365 numhubs = 0;
1366 for(node = fnetnodes; node != NULL; node = node->next)
1367 {
1368 if(node->state == FNN_EST)
1369 numhubs++;
1370 }
1371 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1372 hubhandleaction(sk, fn, cmd, args);
1373}
1374
1375static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1376{
1377 struct dchub *hub;
1378 char *p, *p2;
1379
1380 hub = fn->data;
1381 p = args;
1382 if((p2 = strchr(p, ' ')) == NULL)
1383 return;
1384 *(p2++) = 0;
1385 p = p2;
1386 if((p2 = strchr(p, ' ')) == NULL)
1387 return;
1388 *(p2++) = 0;
1389 if(strcmp(p, "From:"))
1390 return;
1391 p = p2;
1392 if((p2 = strstr(p, " $")) == NULL)
1393 return;
1394 *p2 = 0;
1395 p2 += 2;
ffa81d5f 1396 hubrecvchat(hub->sk, fn, p, p2);
d3372da9 1397 hubhandleaction(sk, fn, cmd, args);
1398}
1399
1400static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1401{
1402 struct dchub *hub;
d86b7a9f 1403 char *p, *p2, *buf;
d3372da9 1404 char *nick, *filename, *hubname;
1405 int size, slots;
d86b7a9f 1406 size_t buflen;
d3372da9 1407 struct srchres *sr;
1408 wchar_t *wnick, *wfile;
1409
1410 hub = fn->data;
1411 nick = p = args;
1412 if((p2 = strchr(p, ' ')) == NULL)
1413 return;
1414 *p2 = 0;
1415 p = p2 + 1;
1416 filename = p;
1417 if((p2 = strchr(p, 5)) == NULL)
1418 return;
1419 *p2 = 0;
1420 p = p2 + 1;
1421 if((p2 = strchr(p, ' ')) == NULL)
1422 return;
1423 *p2 = 0;
1424 size = atoi(p);
1425 p = p2 + 1;
1426 if((p2 = strchr(p, '/')) == NULL)
1427 return;
1428 *p2 = 0;
1429 slots = atoi(p);
1430 p = p2 + 1;
1431 if((p2 = strchr(p, 5)) == NULL)
1432 return;
1433 p = p2 + 1;
1434 hubname = p;
1435 if((p2 = strstr(p, " (")) == NULL)
1436 return;
1437 *p2 = 0;
1d85f24b 1438 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1439 return;
1d85f24b 1440 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1441 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1442 {
1443 free(wnick);
1444 return;
1445 }
1446 sr = newsrchres(&dcnet, wfile, wnick);
1447 if(sr->peernick != NULL)
1448 free(sr->peernick);
1449 sr->peernick = swcsdup(wnick);
1450 sr->size = size;
1451 sr->slots = slots;
1452 free(wfile);
1453 free(wnick);
d86b7a9f 1454 if(!strncmp(hubname, "TTH:", 4))
1455 {
1456 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1457 {
1458 if(buflen == 24)
1459 sr->hash = newhash(L"TTH", 24, buf);
1460 free(buf);
1461 }
1462 }
d3372da9 1463 getfnetnode(sr->fn = fn);
1464 submitsrchres(sr);
1465 freesrchres(sr);
1466 hubhandleaction(sk, fn, cmd, args);
1467}
1468
1469static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1470{
1471 /* Do nothing for now. */
1472}
1473
48509089 1474static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1475{
1476 struct dchub *hub;
1c4b02cd 1477 wchar_t *pw;
48509089 1478 char *mbspw;
1479
1480 hub = fn->data;
1c4b02cd 1481 pw = wpfind(fn->args, L"password");
1d85f24b 1482 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1483 {
1484 killfnetnode(fn);
1485 return;
1486 }
1487 qstrf(sk, "$MyPass %s|", mbspw);
1488 free(mbspw);
fcd0627b 1489 fn->regstatus = FNNS_REG;
48509089 1490 hubhandleaction(sk, fn, cmd, args);
1491}
1492
c9b3ad74 1493static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1494{
1495 struct dchub *hub;
1496
1497 hub = fn->data;
fcd0627b 1498 fn->regstatus = FNNS_OP;
c9b3ad74 1499 hubhandleaction(sk, fn, cmd, args);
1500}
1501
08b74f8c
FT		 1502static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1503{
1504 struct dchub *hub;
1505 int i;
1506 char *p, *p2;
1507 char **arr;
1508 size_t arrsize, arrdata;
1509
1510 hub = fn->data;
1511 if(hub->supports != NULL)
1512 {
1513 for(i = 0; hub->supports[i] != NULL; i++)
1514 free(hub->supports[i]);
1515 free(hub->supports);
1516 }
1517 arr = NULL;
1518 arrsize = arrdata = 0;
1519 p = args;
1520 do
1521 {
1522 if((p2 = strchr(p, ' ')) != NULL)
1523 *(p2++) = 0;
1524 if(*p == 0)
1525 continue;
1526 addtobuf(arr, sstrdup(p));
1527 } while((p = p2) != NULL);
1528 addtobuf(arr, NULL);
1529 hub->supports = arr;
1530}
1531
d3372da9 1532static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1533{
9a2d6cb8 1534 struct dcexppeer *expect;
1c4b02cd 1535 struct dchub *hub;
9a2d6cb8 1536
d3372da9 1537 if(peer->nativename != NULL)
1538 free(peer->nativename);
1539 peer->nativename = sstrdup(args);
1540 if(peer->wcsname != NULL)
1541 free(peer->wcsname);
1d85f24b 1542 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1543 {
1544 freedcpeer(peer);
1545 return;
1546 }
9a2d6cb8 1547 if(peer->accepted)
1548 {
1549 for(expect = expected; expect != NULL; expect = expect->next)
1550 {
1551 if(!strcmp(expect->nick, args))
1552 break;
1553 }
1554 if(expect == NULL)
1555 {
1556 peer->fn = NULL;
1557 } else {
1c4b02cd 1558 hub = expect->fn->data;
9a2d6cb8 1559 peer->fn = expect->fn;
1560 getfnetnode(peer->fn);
1c4b02cd 1561 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1562 freeexppeer(expect);
1563 }
1564 }
d3372da9 1565}
1566
1567static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1568{
1569 char *p;
9a2d6cb8 1570 int mydir;
1571 struct transfer *transfer;
d3372da9 1572
1573 if((p = strchr(args, ' ')) == NULL)
1574 return;
1575 *p = 0;
1576 if(!strcmp(args, "Upload"))
9a2d6cb8 1577 mydir = TRNSD_DOWN;
d3372da9 1578 if(!strcmp(args, "Download"))
9a2d6cb8 1579 mydir = TRNSD_UP;
1580 if(peer->accepted)
1581 {
1582 if((peer->transfer == NULL) || (mydir != peer->direction))
1583 {
1584 freedcpeer(peer);
1585 return;
1586 }
1b14d3d8 1587 if(peer->direction == TRNSD_DOWN)
1588 requestfile(peer);
9a2d6cb8 1589 } else {
1590 if(peer->wcsname == NULL)
1591 {
1592 freedcpeer(peer);
1593 return;
1594 }
1595 peer->direction = mydir;
1596 if(peer->direction == TRNSD_UP)
1597 {
01663fd9 1598 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1599 {
1600 freedcpeer(peer);
1601 return;
1602 }
9a2d6cb8 1603 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1604 } else {
1605 if((transfer = finddownload(peer->wcsname)) == NULL)
1606 {
1607 freedcpeer(peer);
1608 return;
1609 }
1610 transferattach(transfer, &dctransfer, peer);
1611 transfersetstate(transfer, TRNS_HS);
1612 }
1613 transfersetnick(transfer, peer->wcsname);
1614 peer->transfer = transfer;
1615 if(peer->extended)
1616 sendsupports(peer);
1617 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1618 if(peer->key != NULL)
1619 qstrf(sk, "$Key %s|", peer->key);
1620 if(peer->direction == TRNSD_DOWN)
1621 requestfile(peer);
1622 }
d3372da9 1623}
1624
1625static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1626{
9a2d6cb8 1627 char *p, *key;
1628 struct transfer *transfer;
d3372da9 1629
1630 if((p = strchr(args, ' ')) == NULL)
1631 return;
1632 *p = 0;
1633 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1634 peer->extended = 1;
9a2d6cb8 1635 key = dcmakekey(args);
1636 if(peer->accepted)
1637 {
1638 if(peer->wcsname == NULL)
1639 {
1640 freedcpeer(peer);
1641 return;
1642 }
1643 sendmynick(peer);
1644 sendpeerlock(peer);
1645 if(peer->extended)
1646 sendsupports(peer);
1647 if((transfer = finddownload(peer->wcsname)) == NULL)
1648 {
01663fd9 1649 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1650 {
1651 freedcpeer(peer);
1652 return;
1653 }
9a2d6cb8 1654 peer->direction = TRNSD_UP;
1655 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1656 } else {
1657 peer->direction = TRNSD_DOWN;
1658 transferattach(transfer, &dctransfer, peer);
1659 transfersetstate(transfer, TRNS_HS);
1660 }
1661 transfersetnick(transfer, peer->wcsname);
1662 peer->transfer = transfer;
1663 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1664 qstrf(sk, "$Key %s|", key);
62da2712 1665 free(key);
9a2d6cb8 1666 } else {
1667 if(peer->key != NULL)
1668 free(peer->key);
1669 peer->key = key;
1670 }
d3372da9 1671}
1672
1673static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1674{
9a2d6cb8 1675 /* NOP */
1676}
1677
1678static void startdl(struct dcpeer *peer)
1679{
1e9d82b1 1680 if(peer->timeout != NULL)
1681 canceltimer(peer->timeout);
9a2d6cb8 1682 peer->state = PEER_TRNS;
1683 transferstartdl(peer->transfer, peer->sk);
cab0b442 1684 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1685 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
9a2d6cb8 1686}
1687
1688static void startul(struct dcpeer *peer)
1689{
1e9d82b1 1690 if(peer->timeout != NULL)
1691 canceltimer(peer->timeout);
9a2d6cb8 1692 peer->state = PEER_TRNS;
1693 transferstartul(peer->transfer, peer->sk);
cab0b442 1694 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1695}
1696
1697static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1698{
1699 int size;
1fc81821 1700 struct transfer *transfer;
d3372da9 1701
1702 if(peer->transfer == NULL)
1703 {
1704 freedcpeer(peer);
1705 return;
1706 }
1707 size = atoi(args);
9a2d6cb8 1708 if(peer->transfer->size != size)
d3372da9 1709 {
d3372da9 1710 transfersetsize(peer->transfer, size);
1fc81821 1711 transfer = peer->transfer;
d3372da9 1712 freedcpeer(peer);
1fc81821 1713 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1714 return;
1715 }
9a2d6cb8 1716 startdl(peer);
1717 qstr(peer->sk, "$Send|");
d3372da9 1718}
1719
1720static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1721{
df873cd0 1722 if(peer->fetchingtthl)
1723 {
1724 peer->fetchingtthl = 0;
1725 peer->notthl = 1;
1726 requestfile(peer);
1727 return;
1728 }
d3372da9 1729 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1730 {
1731 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1732 resettransfer(peer->transfer);
1733 return;
1734 }
1735 freedcpeer(peer);
1736}
1737
1738static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1739{
1740 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1741 {
1742 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1743 resettransfer(peer->transfer);
1744 return;
1745 }
1746 freedcpeer(peer);
1747}
1748
1749static struct
1750{
1751 char *name;
1752 char **file;
1753 void (*func)(void);
1754} lists[] =
1755{
1756 {"MyList.DcLst", &hmlistname, updatehmlist},
1757 {"files.xml", &xmllistname, updatexmllist},
1758 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1759 {NULL, NULL}
1760};
1761
1762static int openfilelist(char *name)
1763{
1764 int i, fd;
1765 int errnobak;
1766
1767 for(i = 0; lists[i].name != NULL; i++)
1768 {
1769 if(!strcmp(name, lists[i].name))
1770 break;
1771 }
1772 errno = 0;
1773 if(lists[i].name == NULL)
1774 return(-1);
1775 fd = -1;
1776 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1777 lists[i].func();
1778 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1779 {
1780 errnobak = errno;
1781 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1782 errno = errnobak;
1783 return(-1);
1784 }
1785 return(fd);
1786}
1787
1788static struct sharecache *findbytth(char *tth32)
1789{
1790 char *buf;
1791 size_t buflen;
1792 struct sharecache *node;
1793
1794 if((buf = base32decode(tth32, &buflen)) == NULL)
1795 return(NULL);
1796 if(buflen != 24)
1797 {
1798 free(buf);
1799 return(NULL);
1800 }
1801 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1802 {
1803 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1804 break;
1805 }
1806 free(buf);
1807 return(node);
1808}
1809
1810static struct sharecache *resdcpath(char *path, char *charset, char sep)
1811{
1812 struct sharecache *node;
1813 char *p, *p2;
1814
1815 node = shareroot;
1816 p = path;
1817 while(p != NULL)
1818 {
1819 if((p2 = strchr(p, sep)) != NULL)
1820 *(p2++) = 0;
1821 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1822 return(NULL);
1823 p = p2;
1824 }
1825 return(node);
1826}
1827
1828static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1829{
1830 int offset;
1831 char *p, *buf;
1832 wchar_t *buf2;
1833 struct sharecache *node;
1834 struct socket *lesk;
1835 int fd;
1836 struct stat sb;
1837
1838 if(peer->transfer == NULL)
1839 {
1840 freedcpeer(peer);
1841 return;
1842 }
1843 if((p = strchr(args, '$')) == NULL)
1844 {
1845 freedcpeer(peer);
1846 return;
1847 }
1848 *(p++) = 0;
1849 if((offset = (atoi(p) - 1)) < 0)
1850 {
1851 freedcpeer(peer);
1852 return;
1853 }
1854 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1855 {
1856 qstr(sk, "$Error Could not send file list|");
1857 freedcpeer(peer);
1858 return;
1859 } else if(fd >= 0) {
1860 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1861 transfersetpath(peer->transfer, buf2);
f00d7432 1862 peer->transfer->flags.b.minislot = 1;
d3372da9 1863 }
1864 if(fd < 0)
1865 {
1d85f24b 1866 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1867 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1868 {
1869 qstrf(sk, "$Error File not in share|");
1870 freedcpeer(peer);
1871 return;
1872 }
1873 if((fd = opensharecache(node)) < 0)
1874 {
1875 qstrf(sk, "$Error %s|", strerror(errno));
1876 freedcpeer(peer);
1877 return;
1878 }
1879 buf = getfspath(node);
1880 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1881 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1882 else
1883 transfersetpath(peer->transfer, buf2);
1884 free(buf);
1885 }
1886 if(fstat(fd, &sb) < 0)
1887 {
1888 close(fd);
1889 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1890 qstrf(sk, "$Error|");
1891 freedcpeer(peer);
1892 return;
1893 }
f00d7432 1894 if(sb.st_size < 65536)
1895 peer->transfer->flags.b.minislot = 1;
1896 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1897 close(fd);
f00d7432 1898 qstr(sk, "$MaxedOut|");
1899 freedcpeer(peer);
1900 return;
1901 }
d3372da9 1902 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1903 {
1904 close(fd);
1905 qstrf(sk, "$Error Offset out of range|");
1906 freedcpeer(peer);
1907 return;
1908 }
1909 lesk = wrapsock(fd);
1910 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1911 putsock(lesk);
d93b5c2f 1912 qstrf(sk, "$FileLength %zi|", peer->transfer->size);
d3372da9 1913}
1914
1915static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1916{
1917 if(peer->transfer == NULL)
1918 {
1919 freedcpeer(peer);
1920 return;
1921 }
1922 if(peer->transfer->localend == NULL)
1923 {
1924 freedcpeer(peer);
1925 return;
1926 }
1927 peer->ptclose = 1;
9a2d6cb8 1928 startul(peer);
d3372da9 1929}
1930
1931static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1932{
1933 int i;
1934 char *p, *p2;
1935 char **arr;
1936 size_t arrsize, arrdata;
1937
1938 if(peer->supports != NULL)
1939 {
1940 for(i = 0; peer->supports[i] != NULL; i++)
1941 free(peer->supports[i]);
1942 free(peer->supports);
1943 }
1944 arr = NULL;
1945 arrsize = arrdata = 0;
1946 p = args;
1947 do
1948 {
1949 if((p2 = strchr(p, ' ')) != NULL)
1950 *(p2++) = 0;
1951 if(*p == 0)
1952 continue;
1953 addtobuf(arr, sstrdup(p));
1954 } while((p = p2) != NULL);
1955 addtobuf(arr, NULL);
1956 peer->supports = arr;
d3372da9 1957}
1958
1959static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1960{
1961 int fd;
1962 char *p, *p2;
1963 int start, numbytes;
1964 char *charset, *buf;
1965 wchar_t *buf2;
1966 struct sharecache *node;
1967 struct stat sb;
1968 struct socket *lesk;
1969
1970 if(peer->transfer == NULL)
1971 {
1972 freedcpeer(peer);
1973 return;
1974 }
1975 p = args;
1976 if((p2 = strchr(p, ' ')) == NULL)
1977 {
1978 freedcpeer(peer);
1979 return;
1980 }
1981 *(p2++) = 0;
1982 start = atoi(p);
1983 p = p2;
1984 if((p2 = strchr(p, ' ')) == NULL)
1985 {
1986 freedcpeer(peer);
1987 return;
1988 }
1989 *(p2++) = 0;
1990 numbytes = atoi(p);
1991 p = p2;
1992 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1993 charset = "UTF-8";
1994 else
1d85f24b 1995 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1996 charset = DCCHARSET;
1997 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1998 initcompress(peer, CPRS_ZLIB);
1999 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2000 {
2001 qstr(sk, "$Error Could not send file list|");
2002 return;
2003 } else if(fd >= 0) {
2004 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
2005 transfersetpath(peer->transfer, buf2);
f00d7432 2006 peer->transfer->flags.b.minislot = 1;
d3372da9 2007 }
2008 if(fd < 0)
2009 {
d3372da9 2010 if((node = resdcpath(p, charset, '\\')) == NULL)
2011 {
2012 qstr(sk, "$Error File not in cache|");
2013 return;
2014 }
2015 if((fd = opensharecache(node)) < 0)
2016 {
2017 qstrf(sk, "$Error %s|", strerror(errno));
2018 return;
2019 }
2020 buf = getfspath(node);
2021 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2022 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2023 else
2024 transfersetpath(peer->transfer, buf2);
2025 free(buf);
2026 }
2027 if(fstat(fd, &sb) < 0)
2028 {
2029 close(fd);
2030 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2031 qstr(sk, "$Error|");
2032 return;
2033 }
f00d7432 2034 if(sb.st_size < 65536)
2035 peer->transfer->flags.b.minislot = 1;
2036 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 2037 close(fd);
f00d7432 2038 qstr(sk, "$MaxedOut|");
2039 return;
2040 }
d3372da9 2041 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2042 {
2043 close(fd);
2044 qstr(sk, "$Error Offset out of range|");
2045 return;
2046 }
2047 if((numbytes < 0) || (start + numbytes > sb.st_size))
2048 numbytes = sb.st_size - start;
2049 lesk = wrapsock(fd);
2050 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2051 putsock(lesk);
2052 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 2053 startul(peer);
d3372da9 2054}
2055
2056static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2057{
2058 int i;
2059 char **argv, *buf;
2060 int start, numbytes;
2061 struct sharecache *node;
2062 struct stat sb;
2063 struct socket *lesk;
2064 wchar_t *wbuf;
2065 int fd;
2066
2067 if(peer->transfer == NULL)
2068 {
2069 freedcpeer(peer);
2070 return;
2071 }
2072 if((argv = parseadc(args)) == NULL)
2073 {
2074 freedcpeer(peer);
2075 return;
2076 }
2077 if(parrlen(argv) < 4)
2078 {
2079 freedcpeer(peer);
2080 goto out;
2081 }
2082 start = atoi(argv[2]);
2083 numbytes = atoi(argv[3]);
2084 node = NULL;
2085 fd = -1;
2086 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2087 {
2088 qstr(sk, "$Error Could not send file list|");
2089 goto out;
2090 } else if(fd >= 0) {
2091 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2092 transfersetpath(peer->transfer, wbuf);
f00d7432 2093 peer->transfer->flags.b.minislot = 1;
d3372da9 2094 }
2095 if(fd < 0)
2096 {
d3372da9 2097 if(!strncmp(argv[1], "TTH/", 4))
2098 {
2099 if((node = findbytth(argv[1] + 4)) == NULL)
2100 {
2101 qstr(sk, "$Error File not in cache|");
2102 goto out;
2103 }
2104 } else {
9a2d6cb8 2105 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2106 {
2107 qstr(sk, "$Error File not in cache|");
2108 goto out;
2109 }
2110 }
2111 if((fd = opensharecache(node)) < 0)
2112 {
2113 qstrf(sk, "$Error %s|", strerror(errno));
2114 goto out;
2115 }
2116 buf = getfspath(node);
2117 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2118 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2119 else
2120 transfersetpath(peer->transfer, wbuf);
2121 free(buf);
2122 }
2123 if(!strcmp(argv[0], "file"))
2124 {
2125 for(i = 4; argv[i] != NULL; i++)
2126 {
2127 if(!strcmp(argv[i], "ZL1"))
2128 initcompress(peer, CPRS_ZLIB);
2129 }
2130 if(fstat(fd, &sb) < 0)
2131 {
2132 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2133 qstr(sk, "$Error|");
2134 goto out;
2135 }
f00d7432 2136 if(sb.st_size < 65536)
2137 peer->transfer->flags.b.minislot = 1;
2138 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2139 qstr(sk, "$MaxedOut|");
2140 goto out;
2141 }
d3372da9 2142 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2143 {
2144 qstr(sk, "$Error Offset out of range|");
2145 goto out;
2146 }
2147 if((numbytes < 0) || (start + numbytes > sb.st_size))
2148 numbytes = sb.st_size - start;
2149 lesk = wrapsock(fd);
2150 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2151 putsock(lesk);
2152 fd = -1;
2153 qstr(sk, "$ADCSND");
2154 sendadc(sk, "file");
2155 sendadc(sk, argv[1]);
2156 sendadcf(sk, "%i", start);
2157 sendadcf(sk, "%i", numbytes);
2158 if(peer->compress == CPRS_ZLIB)
2159 sendadc(sk, "ZL1");
2160 qstr(sk, "|");
9a2d6cb8 2161 startul(peer);
d3372da9 2162 } else if(!strcmp(argv[0], "tthl")) {
2163 /*
2164 * XXX: Implement full TTHL support.
2165 *
2166 * In the meantime, this is better than nothing, since it at
2167 * least allows fetching of the TTH root if it isn't already
2168 * known.
2169 */
2170 if(node == NULL)
2171 {
2172 qstr(sk, "$Error no TTHL data for virtual files|");
2173 goto out;
2174 }
2175 qstr(sk, "$ADCSND");
2176 sendadc(sk, "tthl");
2177 sendadc(sk, argv[1]);
2178 sendadc(sk, "0");
2179 sendadc(sk, "24");
2180 qstr(sk, "|");
2181 sockqueue(sk, node->hashtth, 24);
2182 } else {
2183 qstr(sk, "$Error Namespace not implemented|");
2184 goto out;
2185 }
d3372da9 2186
2187 out:
2188 if(fd >= 0)
2189 close(fd);
2190 freeparr(argv);
2191}
2192
9a2d6cb8 2193static void handletthl(struct dcpeer *peer)
2194{
2195 char buf[24];
2196
2197 while(peer->inbufdata >= 24)
2198 {
2199 pushtigertree(&peer->tth, peer->inbuf);
2200 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2201 peer->curread += 24;
9a2d6cb8 2202 }
e52006fe 2203 if(peer->curread >= peer->totalsize)
9a2d6cb8 2204 {
1e9d82b1 2205 if(peer->timeout == NULL)
2206 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2207 peer->state = PEER_CMD;
2208 synctigertree(&peer->tth);
2209 restigertree(&peer->tth, buf);
2210 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2211 requestfile(peer);
2212 }
2213}
2214
2215static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2216{
2217 char **argv;
2218 int start, numbytes;
2219
2220 if(peer->transfer == NULL)
2221 {
2222 freedcpeer(peer);
2223 return;
2224 }
2225 if((argv = parseadc(args)) == NULL)
2226 {
2227 freedcpeer(peer);
2228 return;
2229 }
2230 if(parrlen(argv) < 4)
2231 {
2232 freedcpeer(peer);
2233 goto out;
2234 }
2235 start = atoi(argv[2]);
2236 numbytes = atoi(argv[3]);
2237 if(!strcmp(argv[0], "tthl"))
2238 {
2239 if((start != 0) || (numbytes % 24 != 0))
2240 {
2241 /* Weird. Bail out. */
2242 freedcpeer(peer);
2243 goto out;
2244 }
1e9d82b1 2245 if(peer->timeout != NULL)
2246 canceltimer(peer->timeout);
9a2d6cb8 2247 peer->state = PEER_TTHL;
2248 peer->totalsize = numbytes;
2249 peer->curread = 0;
df873cd0 2250 peer->fetchingtthl = 0;
9a2d6cb8 2251 inittigertree(&peer->tth);
2252 handletthl(peer);
2253 } else if(!strcmp(argv[0], "file")) {
2254 if(start != peer->transfer->curpos)
2255 {
2256 freedcpeer(peer);
2257 goto out;
2258 }
2259 if(start + numbytes != peer->transfer->size)
2260 {
2261 transfersetsize(peer->transfer, start + numbytes);
2262 freedcpeer(peer);
2263 goto out;
2264 }
2265 startdl(peer);
cab0b442 2266 if(peer->inbufdata > 0)
2267 {
2268 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2269 peer->inbufdata = 0;
2270 transread(sk, peer);
2271 }
9a2d6cb8 2272 } else {
2273 /* We certainly didn't request this...*/
2274 freedcpeer(peer);
2275 goto out;
2276 }
2277
2278 out:
2279 freeparr(argv);
2280}
2281
2282static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2283{
2284 int numbytes;
2285
2286 if(peer->transfer == NULL)
2287 {
2288 freedcpeer(peer);
2289 return;
2290 }
2291 numbytes = atoi(args);
2292 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2293 {
2294 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2295 freedcpeer(peer);
2296 return;
2297 }
2298 startdl(peer);
cab0b442 2299 if(peer->inbufdata > 0)
2300 {
2301 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2302 peer->inbufdata = 0;
2303 transread(sk, peer);
2304 }
9a2d6cb8 2305}
2306
d3372da9 2307/*
2308Hub skeleton:
2309static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2310{
2311 struct dchub *hub;
2312
2313 hub = fn->data;
2314 hubhandleaction(sk, fn, cmd, args);
2315}
2316
2317Peer skeleton:
2318static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2319{
d3372da9 2320}
2321
2322*/
2323
2324static int hubreqconn(struct fnetpeer *peer)
2325{
2326 struct dchub *hub;
2327 char *mbsnick;
2328
2329 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2330 {
2331 errno = EINVAL;
2332 return(1);
2333 }
2334 if((hub = peer->fn->data) == NULL)
2335 {
2336 errno = EFAULT;
2337 return(1);
2338 }
1d85f24b 2339 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2340 return(1); /* Shouldn't happen, of course, but who knows... */
2341 if(tcpsock != NULL)
2342 {
ffa81d5f 2343 sendctm(hub->sk, mbsnick);
d3372da9 2344 expectpeer(mbsnick, peer->fn);
2345 } else {
ffa81d5f 2346 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
d3372da9 2347 }
2348 free(mbsnick);
2349 return(0);
2350}
2351
2352static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2353{
2354 struct dchub *hub;
2355 char *mbsstring, *mbsto;
2356
2357 hub = fn->data;
1d85f24b 2358 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2359 {
2360 errno = EILSEQ;
2361 return(1);
2362 }
1d85f24b 2363 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2364 {
2365 errno = EILSEQ;
2366 return(1);
2367 }
2368 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2369 {
2370 free(mbsto);
2371 free(mbsstring);
2372 errno = ESRCH;
2373 return(1);
2374 }
2375 if(strchr(mbsstring, '|') != NULL)
2376 {
2377 free(mbsto);
2378 free(mbsstring);
2379 errno = EILSEQ;
2380 return(1);
2381 }
2382 if(public)
2383 {
2384 if(*to == L'\0')
2385 {
ffa81d5f 2386 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
d3372da9 2387 } else {
ffa81d5f 2388 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2389 }
2390 } else {
ffa81d5f 2391 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2392 }
2393 free(mbsto);
2394 free(mbsstring);
2395 return(0);
2396}
2397
2398static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2399{
2400 int minl, maxl, minr, maxr, retmin, retmax;
2401
2402 switch(sexpr->op)
2403 {
2404 case SOP_AND:
2405 findsizelimit(sexpr->l, &minl, &maxl);
2406 findsizelimit(sexpr->r, &minr, &maxr);
2407 retmin = (minl > minr)?minl:minr;
2408 if((maxl != -1) && (maxr != -1))
2409 retmax = (maxl < maxr)?maxl:maxr;
2410 else if(maxl != -1)
2411 retmax = maxl;
2412 else if(maxr != -1)
2413 retmax = maxr;
2414 else
2415 retmax = -1;
2416 break;
2417 case SOP_OR:
2418 findsizelimit(sexpr->l, &minl, &maxl);
2419 findsizelimit(sexpr->r, &minr, &maxr);
2420 retmin = (minl < minr)?minl:minr;
2421 if((maxl == -1) || (maxr == -1))
2422 retmax = -1;
2423 else
2424 retmax = (maxl > maxr)?maxl:maxr;
2425 break;
2426 case SOP_NOT:
2427 findsizelimit(sexpr->l, &minl, &maxl);
2428 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2429 {
2430 retmin = 0;
2431 retmax = -1;
2432 } else if((minl == 0) && (maxl != -1)) {
2433 retmin = maxl + 1;
2434 retmax = -1;
2435 } else if((minl != 0) && (maxl == -1)) {
2436 retmin = 0;
2437 retmax = minl - 1;
2438 } else { /* This would yield two seperate intervals, which DC cannot handle */
2439 retmin = 0;
2440 retmax = -1;
2441 }
2442 case SOP_SIZELT:
2443 retmin = 0;
2444 retmax = sexpr->d.n - 1;
2445 break;
2446 case SOP_SIZEEQ:
2447 retmin = sexpr->d.n;
2448 retmax = sexpr->d.n;
2449 break;
2450 case SOP_SIZEGT:
2451 retmin = sexpr->d.n + 1;
2452 retmax = -1;
2453 break;
2454 default:
2455 retmin = 0;
2456 retmax = -1;
2457 break;
2458 }
2459 if(min != NULL)
2460 *min = retmin;
2461 if(max != NULL)
2462 *max = retmax;
2463}
2464
9d8cf743 2465static struct hash *findsehash(struct sexpr *sexpr)
2466{
2467 struct hash *h1, *h2;
2468
2469 switch(sexpr->op)
2470 {
2471 case SOP_AND:
2472 if((h1 = findsehash(sexpr->l)) != NULL)
2473 return(h1);
2474 if((h1 = findsehash(sexpr->r)) != NULL)
2475 return(h1);
2476 break;
2477 case SOP_OR:
175c86de 2478 if((h1 = findsehash(sexpr->l)) == NULL)
2479 return(NULL);
2480 if((h2 = findsehash(sexpr->r)) == NULL)
2481 return(NULL);
9d8cf743 2482 if(hashcmp(h1, h2))
2483 return(h1);
2484 break;
2485 case SOP_HASHIS:
2486 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2487 return(sexpr->d.hash);
2488 default:
2489 break;
2490 }
2491 return(NULL);
2492}
2493
d3372da9 2494static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2495{
2496 struct dchub *hub;
2497 struct wcslist *list, *cur;
2498 char *sstr, *buf, *p;
2499 size_t sstrsize, sstrdata;
2500 struct sockaddr *name;
2501 socklen_t namelen;
2502 int minsize, maxsize;
9d8cf743 2503 struct hash *hash;
d3372da9 2504
2505 hub = fn->data;
ffa81d5f 2506 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
d3372da9 2507 return(1);
2508 list = findsexprstrs(srch->sexpr);
2509 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2510 hash = findsehash(srch->sexpr);
d3372da9 2511 if((minsize != 0) && (maxsize != -1))
2512 {
2513 /* Choose either minsize or maxsize by trying to determine
2514 * which choice will be most restrictive. The result can be
2515 * approximative at best anyway, so don't try too hard... */
2516 if((50000000 - maxsize) > (minsize - 50000000))
2517 minsize = 0;
2518 else
2519 maxsize = -1;
2520 }
d3372da9 2521 sstr = NULL;
2522 sstrsize = sstrdata = 0;
9d8cf743 2523 if((hash != NULL) && (hash->len == 24))
d3372da9 2524 {
9d8cf743 2525 /* Prioritize hash searches above all else */
2526 bufcat(sstr, "F?T?0?9?TTH:", 12);
2527 buf = base32encode(hash->buf, hash->len);
2528
2529 bufcat(sstr, buf, 39);
2530 free(buf);
2531 } else {
2532 if(minsize != 0)
d3372da9 2533 {
9d8cf743 2534 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2535 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2536 } else if(maxsize != -1) {
2537 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2538 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2539 } else {
2540 bufcat(sstr, "F?F?0?1?", 8);
2541 }
2542 if(list != NULL)
2543 {
2544 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2545 {
1d85f24b 2546 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2547 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2548 {
2549 /* Can't find anything anyway if the search expression
2550 * requires characters outside DC's charset. There's
2551 * nothing technically wrong with the search itself,
2552 * however, so return success. This should be
2553 * considered as an optimization. */
2554 freesl(&list);
2555 if(sstr != NULL)
2556 free(sstr);
2557 return(0);
2558 }
2559 if(cur != list)
2560 addtobuf(sstr, '$');
2561 /*
2562 * It probably doesn't hurt if buf contains any extra
2563 * dollar signs - it will just result in extra search
2564 * terms, and the extraneous results will be filtered by
2565 * the search layer anyway. It hurts if it contains any
2566 * pipes, though, so let's sell them for money.
2567 */
2568 for(p = buf; *p; p++)
2569 {
2570 if(*p == '|')
2571 *p = '$';
2572 }
2573 bufcat(sstr, buf, strlen(buf));
2574 free(buf);
d3372da9 2575 }
9d8cf743 2576 } else {
2577 /* Will match all files... :-/ */
2578 addtobuf(sstr, '.');
d3372da9 2579 }
d3372da9 2580 }
2581 addtobuf(sstr, 0);
2582 if(tcpsock != NULL)
2583 {
ffa81d5f 2584 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
d3372da9 2585 {
2586 flog(LOG_WARNING, "cannot get address of UDP socket");
2587 } else {
ffa81d5f 2588 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2589 free(name);
2590 }
2591 } else {
ffa81d5f 2592 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2593 }
2594 free(sstr);
2595 freesl(&list);
2596 fn->lastsrch = time(NULL);
2597 return(0);
2598}
2599
2600#undef skipcmd
2601#undef qstr
2602#undef qstrf
2603
2604#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2605static struct command hubcmds[] =
d3372da9 2606{
2607 {"$Lock", cc(cmd_lock)},
2608 {"$HubName", cc(cmd_hubname)},
2609 {"$Hello", cc(cmd_hello)},
2610 {"$Quit", cc(cmd_quit)},
2611 {"$NickList", cc(cmd_nicklist)},
2612 {"$OpList", cc(cmd_oplist)},
2613 {"$MyINFO", cc(cmd_myinfo)},
2614 {"$ForceMove", cc(cmd_forcemove)},
2615 {"$Search", cc(cmd_search)},
2616 {"$MultiSearch", cc(cmd_search)},
2617 {"$ConnectToMe", cc(cmd_connecttome)},
2618 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2619 {"$GetNetInfo", cc(cmd_getnetinfo)},
2620 {"$To:", cc(cmd_to)},
2621 {"$SR", cc(cmd_sr)},
2622 {"$UserCommand", cc(cmd_usercommand)},
48509089 2623 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2624 {"$LogedIn", cc(cmd_logedin)}, /* sic */
08b74f8c 2625 {"$Supports", cc(cmd_hubsupports)},
d3372da9 2626 {NULL, NULL}
2627};
2628
8b930085 2629static struct command peercmds[] =
d3372da9 2630{
2631 {"$MyNick", cc(cmd_mynick)},
2632 {"$Lock", cc(cmd_peerlock)},
2633 {"$Direction", cc(cmd_direction)},
2634 {"$Key", cc(cmd_key)},
2635 {"$FileLength", cc(cmd_filelength)},
2636 {"$Error", cc(cmd_error)},
2637 {"$MaxedOut", cc(cmd_maxedout)},
2638 {"$Get", cc(cmd_get)},
2639 {"$Send", cc(cmd_send)},
2640 {"$Supports", cc(cmd_supports)},
2641 {"$GetBlock", cc(cmd_getblock)},
2642 {"$UGetBlock", cc(cmd_getblock)},
2643 {"$GetZBlock", cc(cmd_getblock)},
2644 {"$UGetZBlock", cc(cmd_getblock)},
2645 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2646 {"$ADCSND", cc(cmd_adcsnd), 1},
2647 {"$Sending", cc(cmd_sending), 1},
d3372da9 2648 {NULL, NULL}
2649};
2650#undef cc
2651
2652static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2653{
cab0b442 2654 CBUNREG(transfer, trans_filterout, peer);
d3372da9 2655 if(peer->freeing)
2656 return;
2657 peer->transfer = NULL;
2658 freedcpeer(peer);
2659}
2660
2661static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2662{
2663 int ret;
2664 void *buf;
c7185019 2665 unsigned char outbuf[1024];
d3372da9 2666 z_stream *cstr;
2667 size_t bufsize;
2668
2669 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2670 {
2671 if(sockqueuesize(peer->sk) < 65536)
2672 {
2673 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2674 {
2675 if(peer->compress == CPRS_NONE)
2676 {
2677 sockqueue(peer->sk, buf, bufsize);
2678 } else if(peer->compress == CPRS_ZLIB) {
2679 cstr = peer->cprsdata;
2680 cstr->next_in = buf;
2681 cstr->avail_in = bufsize;
2682 while(cstr->avail_in > 0)
2683 {
2684 cstr->next_out = outbuf;
2685 cstr->avail_out = sizeof(outbuf);
2686 if((ret = deflate(cstr, 0)) != Z_OK)
2687 {
2688 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2689 freedcpeer(peer);
2690 return;
2691 }
2692 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2693 }
2694 }
2695 free(buf);
2696 }
2697 if(peer->state == PEER_SYNC)
2698 {
2699 if(peer->compress == CPRS_ZLIB)
2700 {
2701 cstr = peer->cprsdata;
2702 cstr->next_in = NULL;
2703 cstr->avail_in = 0;
2704 do
2705 {
2706 cstr->next_out = outbuf;
2707 cstr->avail_out = sizeof(outbuf);
2708 ret = deflate(cstr, Z_FINISH);
2709 if((ret != Z_OK) && (ret != Z_STREAM_END))
2710 {
2711 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2712 freedcpeer(peer);
2713 return;
2714 }
2715 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2716 } while(ret != Z_STREAM_END);
2717 }
2718 if(peer->ptclose)
2719 {
2720 freedcpeer(peer);
2721 } else {
1e9d82b1 2722 if(peer->timeout == NULL)
2723 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2724 peer->state = PEER_CMD;
2725 endcompress(peer);
2726 transfersetstate(transfer, TRNS_HS);
2727 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2728 transfer->flags.b.minislot = 0;
cab0b442 2729 peer->sk->writecb = NULL;
d3372da9 2730 }
2731 }
2732 }
2733 }
2734}
2735
2736static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2737{
2738 peer->state = PEER_SYNC;
2739 dctransgotdata(transfer, peer);
2740}
2741
2742static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2743{
2744 if(transferdatasize(transfer) < 65536)
2745 peer->sk->ignread = 0;
2746}
2747
cab0b442 2748static void transread(struct socket *sk, struct dcpeer *peer)
d3372da9 2749{
cab0b442 2750 void *buf;
2751 size_t bufsize;
d3372da9 2752 struct transfer *transfer;
2753
cab0b442 2754 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2755 return;
d3372da9 2756 if(peer->transfer == NULL)
2757 {
cab0b442 2758 free(buf);
d3372da9 2759 freedcpeer(peer);
2760 return;
2761 }
cab0b442 2762 transferputdata(peer->transfer, buf, bufsize);
2763 free(buf);
d3372da9 2764 if(peer->transfer->curpos >= peer->transfer->size)
2765 {
2766 transfer = peer->transfer;
2767 transferdetach(transfer);
2768 transferendofdata(transfer);
2769 return;
2770 }
2771 if(transferdatasize(peer->transfer) > 65535)
cab0b442 2772 sk->ignread = 1;
d3372da9 2773}
2774
cab0b442 2775static void transerr(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 2776{
2777 struct transfer *transfer;
2778
2779 if((transfer = peer->transfer) == NULL)
cab0b442 2780 {
2781 freedcpeer(peer);
d3372da9 2782 return;
cab0b442 2783 }
d3372da9 2784 transferdetach(transfer);
2785 transferendofdata(transfer);
2786}
2787
cab0b442 2788static void transwrite(struct socket *sk, struct dcpeer *peer)
d3372da9 2789{
2790 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
cab0b442 2791 return;
d3372da9 2792 if(peer->transfer == NULL)
2793 {
2794 freedcpeer(peer);
cab0b442 2795 return;
d3372da9 2796 }
2797 dctransgotdata(peer->transfer, peer);
2798}
2799
cab0b442 2800static void udpread(struct socket *sk, void *data)
d3372da9 2801{
d86b7a9f 2802 char *buf, *p, *p2, *hashbuf;
2803 size_t buflen, hashlen;
d3372da9 2804 char *nick, *filename, *hubname;
99a28d47 2805 struct sockaddr_in hubaddr;
d3372da9 2806 int size, slots;
2807 struct fnetnode *fn, *myfn;
2808 struct dchub *hub;
2809 struct srchres *sr;
2810 wchar_t *wnick, *wfile;
d86b7a9f 2811 struct hash *hash;
d3372da9 2812
2813 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
cab0b442 2814 return;
d3372da9 2815 buf = srealloc(buf, buflen + 1);
2816 buf[buflen] = 0;
2817 if(!strncmp(buf, "$SR ", 4))
2818 {
2819 p = buf + 4;
2820 nick = p;
2821 if((p2 = strchr(p, ' ')) == NULL)
2822 {
2823 free(buf);
cab0b442 2824 return;
d3372da9 2825 }
2826 *p2 = 0;
2827 p = p2 + 1;
2828 filename = p;
2829 if((p2 = strchr(p, 5)) == NULL)
2830 {
2831 free(buf);
cab0b442 2832 return;
d3372da9 2833 }
2834 *p2 = 0;
2835 p = p2 + 1;
2836 if((p2 = strchr(p, ' ')) == NULL)
2837 {
2838 free(buf);
cab0b442 2839 return;
d3372da9 2840 }
2841 *p2 = 0;
2842 size = atoi(p);
2843 p = p2 + 1;
2844 if((p2 = strchr(p, '/')) == NULL)
2845 {
2846 free(buf);
cab0b442 2847 return;
d3372da9 2848 }
2849 *p2 = 0;
2850 slots = atoi(p);
2851 p = p2 + 1;
2852 if((p2 = strchr(p, 5)) == NULL)
2853 {
2854 free(buf);
cab0b442 2855 return;
d3372da9 2856 }
2857 p = p2 + 1;
2858 hubname = p;
2859 if((p2 = strstr(p, " (")) == NULL)
2860 {
2861 free(buf);
cab0b442 2862 return;
d3372da9 2863 }
2864 *p2 = 0;
99a28d47 2865 p = p2 + 2;
2866 if((p2 = strchr(p, ':')) == NULL)
2867 {
2868 free(buf);
cab0b442 2869 return;
99a28d47 2870 }
870bf4ad 2871 *(p2++) = 0;
99a28d47 2872 hubaddr.sin_family = AF_INET;
2873 if(!inet_aton(p, &hubaddr.sin_addr))
2874 {
2875 free(buf);
cab0b442 2876 return;
99a28d47 2877 }
2878 p = p2;
2879 if((p2 = strchr(p, ')')) == NULL)
2880 {
2881 free(buf);
cab0b442 2882 return;
99a28d47 2883 }
2884 *p2 = 0;
2885 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2886 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2887 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2888 {
d3372da9 2889 free(buf);
cab0b442 2890 return;
d3372da9 2891 }
2892 myfn = NULL;
d86b7a9f 2893 hash = NULL;
2894 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2895 {
d86b7a9f 2896 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2897 {
2898 if(hashlen == 24)
2899 hash = newhash(L"TTH", 24, hashbuf);
2900 free(hashbuf);
2901 }
2902 } else {
2903 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2904 {
d86b7a9f 2905 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2906 {
d86b7a9f 2907 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2908 {
d86b7a9f 2909 if(myfn == NULL)
2910 {
2911 myfn = fn;
2912 } else {
2913 myfn = NULL;
2914 break;
2915 }
d3372da9 2916 }
2917 }
2918 }
2919 }
99a28d47 2920 if(myfn == NULL)
2921 {
2922 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2923 {
ffa81d5f 2924 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
99a28d47 2925 {
ffa81d5f
FT		 2926 if((hub->sk != NULL) && addreq(hub->sk->remote, (struct sockaddr *)&hubaddr))
2927 {
2928 myfn = fn;
2929 break;
2930 }
99a28d47 2931 }
2932 }
2933 }
1d85f24b 2934 hub = NULL;
2935 if(myfn != NULL)
2936 hub = myfn->data;
2937 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2938 {
2939 free(buf);
cab0b442 2940 return;
1d85f24b 2941 }
d3372da9 2942 sr = newsrchres(&dcnet, wfile, wnick);
2943 if(sr->peernick != NULL)
2944 free(sr->peernick);
2945 sr->peernick = swcsdup(wnick);
2946 sr->size = size;
2947 sr->slots = slots;
2948 free(wfile);
2949 free(wnick);
2950 if(myfn != NULL)
2951 getfnetnode(sr->fn = myfn);
d86b7a9f 2952 if(hash != NULL)
2953 sr->hash = hash;
d3372da9 2954 submitsrchres(sr);
2955 freesrchres(sr);
2956 }
2957 free(buf);
2958}
2959
2960static void hubread(struct socket *sk, struct fnetnode *fn)
2961{
2962 struct dchub *hub;
2963 char *newbuf;
2964 size_t datalen;
2965 char *p;
2966
2967 hub = (struct dchub *)fn->data;
2968 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2969 return;
2970 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2971 hub->inbufdata = 0;
2972 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2973 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2974 free(newbuf);
2975 p = hub->inbuf + hub->inbufdata;
2976 hub->inbufdata += datalen;
2977 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2978 {
2979 *(p++) = 0;
2980 newqcmd(&hub->queue, hub->inbuf);
2981 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2982 datalen = hub->inbufdata;
2983 p = hub->inbuf;
2984 }
2985}
2986
2987static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2988{
2989 killfnetnode(fn);
2990}
2991
2992static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2993{
2994 struct dchub *hub;
2995 char *buf;
2996
2997 hub = fn->data;
1d85f24b 2998 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2999 return(1);
3000 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3001 {
3002 free(buf);
3003 return(1);
3004 }
3005 if(hub == NULL) /* Not yet connected */
3006 {
3007 free(buf);
3008 return(0);
3009 }
3010 if(hub->nativenick != NULL)
3011 free(hub->nativenick);
3012 hub->nativenick = buf;
3013 return(0);
3014}
3015
3016static struct dchub *newdchub(struct fnetnode *fn)
3017{
3018 struct dchub *new;
1c4b02cd 3019 wchar_t *emu;
1d85f24b 3020 wchar_t *wcharset;
3021 char *charset;
d3372da9 3022
3023 new = smalloc(sizeof(*new));
3024 memset(new, 0, sizeof(*new));
3025 fn->data = new;
1c4b02cd 3026 if(confgetint("dc", "dcppemu"))
3027 new->dcppemu = 1;
3028 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3029 {
3030 if(*emu == L'y')
3031 new->dcppemu = 1;
3032 if(*emu == L'n')
3033 new->dcppemu = 0;
3034 }
1d85f24b 3035 charset = NULL;
3036 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3037 {
3038 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3039 {
3040 if(!havecharset(charset))
3041 {
3042 free(charset);
3043 charset = NULL;
3044 }
3045 }
3046 }
3047 if(charset != NULL)
3048 new->charset = charset;
3049 else
3050 new->charset = sstrdup(DCCHARSET);
d3372da9 3051 if(hubsetnick(fn, fn->mynick))
3052 fnetsetnick(fn, L"DoldaConnectUser-IN");
3053 /* IN as in Invalid Nick */
3054 return(new);
3055}
3056
3057static struct dcpeer *newdcpeer(struct socket *sk)
3058{
3059 struct dcpeer *new;
3060
3061 new = smalloc(sizeof(*new));
3062 memset(new, 0, sizeof(*new));
3063 new->transfer = NULL;
3064 getsock(sk);
3065 new->sk = sk;
1c4b02cd 3066 if(confgetint("dc", "dcppemu"))
3067 new->dcppemu = 1;
d3372da9 3068 new->next = peers;
3069 new->prev = NULL;
3070 if(peers != NULL)
3071 peers->prev = new;
3072 peers = new;
3073 numdcpeers++;
3074 return(new);
3075}
3076
3077static void freedcpeer(struct dcpeer *peer)
3078{
3079 int i;
3080 struct qcommand *qcmd;
3081
3082 peer->freeing = 1;
3083 if(peers == peer)
3084 peers = peer->next;
3085 if(peer->next != NULL)
3086 peer->next->prev = peer->prev;
3087 if(peer->prev != NULL)
3088 peer->prev->next = peer->next;
3089 if(peer->transfer != NULL)
3090 {
3091 if(peer->transfer->dir == TRNSD_UP)
3092 peer->transfer->close = 1;
3093 if(peer->transfer->dir == TRNSD_DOWN)
3094 resettransfer(peer->transfer);
3095 transferdetach(peer->transfer);
3096 }
1e9d82b1 3097 if(peer->timeout != NULL)
3098 canceltimer(peer->timeout);
cab0b442 3099 if(peer->sk->data == peer)
3100 peer->sk->data = NULL;
3101 peer->sk->readcb = NULL;
3102 peer->sk->writecb = NULL;
3103 peer->sk->errcb = NULL;
d3372da9 3104 putsock(peer->sk);
3105 endcompress(peer);
3106 if(peer->supports != NULL)
3107 {
3108 for(i = 0; peer->supports[i] != NULL; i++)
3109 free(peer->supports[i]);
3110 free(peer->supports);
3111 }
d3372da9 3112 if(peer->inbuf != NULL)
3113 free(peer->inbuf);
3114 if(peer->key != NULL)
3115 free(peer->key);
3116 if(peer->wcsname != NULL)
3117 free(peer->wcsname);
3118 if(peer->nativename != NULL)
3119 free(peer->nativename);
1d85f24b 3120 if(peer->charset != NULL)
3121 free(peer->charset);
d3372da9 3122 if(peer->fn != NULL)
3123 putfnetnode(peer->fn);
3124 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3125 freeqcmd(qcmd);
3126 free(peer);
3127 numdcpeers--;
3128}
3129
ffa81d5f 3130static void hubconnect(struct fnetnode *fn, struct socket *sk)
d3372da9 3131{
ffa81d5f
FT		 3132 struct dchub *hub;
3133
3134 sk->readcb = (void (*)(struct socket *, void *))hubread;
3135 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3136 fn->data = hub = newdchub(fn);
3137 sk->data = fn;
3138 getsock(hub->sk = sk);
d3372da9 3139 return;
3140}
3141
3142static void hubdestroy(struct fnetnode *fn)
3143{
08b74f8c 3144 int i;
d3372da9 3145 struct dchub *hub;
3146 struct qcommand *qcmd;
3147
3148 hub = (struct dchub *)fn->data;
ffa81d5f 3149 putsock(hub->sk);
d3372da9 3150 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3151 freeqcmd(qcmd);
08b74f8c
FT		 3152 if(hub->supports != NULL)
3153 {
3154 for(i = 0; hub->supports[i] != NULL; i++)
3155 free(hub->supports[i]);
3156 free(hub->supports);
3157 }
d3372da9 3158 if(hub->nativename != NULL)
3159 free(hub->nativename);
3160 if(hub->nativenick != NULL)
3161 free(hub->nativenick);
1d85f24b 3162 if(hub->charset != NULL)
3163 free(hub->charset);
d3372da9 3164 if(hub->inbuf != NULL)
3165 free(hub->inbuf);
3166 free(hub);
3167}
3168
ffa81d5f
FT		 3169static void hubkill(struct fnetnode *fn)
3170{
3171 struct dchub *hub;
3172
3173 hub = (struct dchub *)fn->data;
3174 hub->sk->close = 1;
3175}
3176
d3372da9 3177static wchar_t *dcbasename(wchar_t *filename)
3178{
3179 wchar_t *ret;
3180
3181 if((ret = wcsrchr(filename, L'\\')) != NULL)
3182 return(ret + 1);
3183 return(filename);
3184}
3185
3186static struct transferiface dctransfer =
3187{
3188 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3189 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3190 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3191 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3192};
3193
3194static struct fnet dcnet =
3195{
3196 .name = L"dc",
3197 .connect = hubconnect,
3198 .destroy = hubdestroy,
ffa81d5f 3199 .kill = hubkill,
d3372da9 3200 .setnick = hubsetnick,
3201 .reqconn = hubreqconn,
3202 .sendchat = hubsendchat,
3203 .search = hubsearch,
3204 .filebasename = dcbasename
3205};
3206
cab0b442 3207static void peerread(struct socket *sk, struct dcpeer *peer)
d3372da9 3208{
cab0b442 3209 char *newbuf, *p;
5ec60e42 3210 size_t datalen;
cab0b442 3211 struct command *cmd;
5ec60e42 3212
d3372da9 3213 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
cab0b442 3214 return;
d3372da9 3215 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3216 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3217 free(newbuf);
d3372da9 3218 peer->inbufdata += datalen;
9a2d6cb8 3219 if(peer->state == PEER_CMD)
d3372da9 3220 {
cab0b442 3221 p = peer->inbuf;
3222 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3223 {
3224 *(p++) = 0;
3225 newqcmd(&peer->queue, peer->inbuf);
3226 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3227 {
3228 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3229 break;
3230 }
3231 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3232 if(cmd->stop)
3233 {
3234 peer->state = PEER_STOP;
3235 break;
3236 }
3237 }
9a2d6cb8 3238 } else if(peer->state == PEER_TTHL) {
3239 handletthl(peer);
d3372da9 3240 }
3241}
3242
cab0b442 3243static void peererror(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 3244{
3245 freedcpeer(peer);
3246}
3247
cab0b442 3248static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
d3372da9 3249{
3250 struct dcpeer *peer;
1c4b02cd 3251 struct dchub *hub;
d3372da9 3252
3253 if(err != 0)
3254 {
3255 putfnetnode(fn);
ff625695 3256 putsock(sk);
cab0b442 3257 return;
d3372da9 3258 }
1c4b02cd 3259 hub = fn->data;
d3372da9 3260 peer = newdcpeer(sk);
3261 peer->fn = fn;
3262 peer->accepted = 0;
1c4b02cd 3263 peer->dcppemu = hub->dcppemu;
cab0b442 3264 sk->readcb = (void (*)(struct socket *, void *))peerread;
3265 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3266 sk->data = peer;
d3372da9 3267 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3268 putsock(sk);
1e9d82b1 3269 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3270 sendmynick(peer);
3271 sendpeerlock(peer);
d3372da9 3272}
3273
cab0b442 3274static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
d3372da9 3275{
3276 struct dcpeer *peer;
3277
3278 peer = newdcpeer(newsk);
3279 peer->accepted = 1;
cab0b442 3280 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3281 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3282 newsk->data = peer;
d3372da9 3283 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3284 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3285}
3286
3287static void updatehmlist(void)
3288{
3289 int i, lev, ic, ret;
3290 struct sharecache *node;
3291 char *buf, *buf2, numbuf[32];
3292 size_t bufsize, bufdata;
3293 int fd, ibuf;
3294
3295 bufdata = 0;
3296 buf = smalloc(bufsize = 65536);
3297 node = shareroot->child;
3298 lev = 0;
3299 while(1)
3300 {
3301 ic = 0;
1d85f24b 3302 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3303 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3304 {
3305 for(i = 0; i < lev; i++)
3306 addtobuf(buf, 9);
3307 bufcat(buf, buf2, strlen(buf2));
3308 free(buf2);
3309 if(node->f.b.type == FILE_REG)
3310 {
3311 addtobuf(buf, '|');
2f3d928f 3312 sprintf(numbuf, "%zi", node->size);
d3372da9 3313 bufcat(buf, numbuf, strlen(numbuf));
3314 }
3315 addtobuf(buf, 13);
3316 addtobuf(buf, 10);
3317 } else {
3318 ic = 1;
3319 }
3320 if((node->child != NULL) && !ic)
3321 {
3322 lev++;
3323 node = node->child;
3324 } else if(node->next != NULL) {
3325 node = node->next;
3326 } else {
3327 while(node->next == NULL)
3328 {
3329 lev--;
3330 node = node->parent;
3331 if(node == shareroot)
3332 break;
3333 }
3334 if(node == shareroot)
3335 break;
3336 node = node->next;
3337 }
3338 }
3339 if(hmlistname != NULL)
3340 {
3341 unlink(hmlistname);
3342 free(hmlistname);
3343 }
3344 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3345 if((fd = mkstemp(hmlistname)) < 0)
3346 {
3347 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3348 free(hmlistname);
3349 hmlistname = NULL;
3350 } else {
3351 /*
3352 * I do not want to implement a good Huffman encoder, and it's not
3353 * like Huffman encoding actually yields any impressive results
3354 * for DC file lists anyway, so I'll just output a bogus
3355 * tree. Implement a good encoder if you want to.
3356 */
3357 write(fd, "HE3\r\0", 5);
3358 write(fd, &bufdata, 4);
3359 ibuf = 256;
3360 write(fd, &ibuf, 2);
3361 ibuf = 8;
3362 for(i = 0; i < 256; i++)
3363 {
3364 write(fd, &i, 1);
3365 write(fd, &ibuf, 1);
3366 }
3367 for(i = 0; i < 256; i++)
3368 write(fd, &i, 1);
3369 for(buf2 = buf; bufdata > 0;)
3370 {
3371 if((ret = write(fd, buf2, bufdata)) < 0)
3372 {
3373 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3374 break;
3375 }
3376 bufdata -= ret;
3377 buf2 += ret;
3378 }
3379 close(fd);
3380 }
3381 free(buf);
3382}
3383
3384static struct xmlent
3385{
3386 wchar_t c;
3387 wchar_t *ent;
3388} entities[] = {
3389 {L'&', L"&amp;"},
3390 {L'\"', L"&#34;"},
3391/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3392 {L'\0', NULL}
3393};
3394
3395static wchar_t *escapexml(wchar_t *src)
3396{
3397 static wchar_t *buf = NULL;;
3398 int ret, c;
3399 wchar_t nbuf[32];
3400 size_t bufsize, bufdata;
3401 struct xmlent *ent;
3402
3403 if(buf != NULL)
3404 free(buf);
3405 buf = NULL;
3406 bufsize = bufdata = 0;
3407 for(; *src != L'\0'; src++)
3408 {
3409 c = wctob(*src);
3410 if((c > 0) && (c < 32))
3411 {
3412 bufcat(buf, L"&#", 2);
3413 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3414 bufcat(buf, nbuf, ret);
3415 addtobuf(buf, L';');
3416 } else {
3417 for(ent = entities; ent->ent != NULL; ent++)
3418 {
3419 if(ent->c == *src)
3420 {
3421 bufcat(buf, ent->ent, wcslen(ent->ent));
3422 break;
3423 }
3424 }
3425 if(ent->ent == NULL)
3426 addtobuf(buf, *src);
3427 }
3428 }
3429 addtobuf(buf, L'\0');
3430 return(buf);
3431}
3432
3433static void updatexmllist(void)
3434{
3435 int i, fd, lev;
3436 FILE *fs;
3437 char cidbuf[14], *namebuf;
3438 char *hashbuf;
3439 struct sharecache *node;
3440
3441 if(xmllistname != NULL)
3442 {
3443 unlink(xmllistname);
3444 free(xmllistname);
3445 }
3446 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3447 if((fd = mkstemp(xmllistname)) < 0)
3448 {
3449 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3450 free(xmllistname);
3451 xmllistname = NULL;
3452 return;
3453 }
3454 if((fs = fdopen(fd, "w")) == NULL)
3455 {
3456 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3457 unlink(xmllistname);
3458 free(xmllistname);
3459 xmllistname = NULL;
3460 close(fd);
3461 return;
3462 }
3463 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3464 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3465 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3466 cidbuf[i] = 0;
1c4b02cd 3467 if(confgetint("dc", "dcppemu"))
3468 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3469 else
3470 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3471
3472 node = shareroot->child;
3473 lev = 0;
3474 while(1)
3475 {
3476 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3477 {
3478 for(i = 0; i < lev; i++)
3479 fputc('\t', fs);
3480 if(node->child != NULL)
3481 {
3482 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3483 node = node->child;
3484 lev++;
3485 continue;
3486 } else {
2f3d928f 3487 fprintf(fs, "<File Name=\"%s\" Size=\"%zi\"", namebuf, node->size);
d3372da9 3488 if(node->f.b.hastth)
3489 {
3490 hashbuf = base32encode(node->hashtth, 24);
3491 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3492 free(hashbuf);
3493 }
3494 fprintf(fs, "/>\r\n");
3495 }
3496 while(node->next == NULL)
3497 {
3498 node = node->parent;
3499 if(node == shareroot)
3500 {
3501 break;
3502 } else {
3503 lev--;
3504 for(i = 0; i < lev; i++)
3505 fputc('\t', fs);
3506 fprintf(fs, "</Directory>\r\n");
3507 }
3508 }
3509 if(node == shareroot)
3510 break;
3511 node = node->next;
3512 }
3513 }
3514
1c4b02cd 3515 if(confgetint("dc", "dcppemu"))
3516 fprintf(fs, "</FileListing>");
3517 else
3518 fprintf(fs, "</FileListing>\r\n");
d3372da9 3519 fclose(fs);
3520}
3521
3522static void updatexmlbz2list(void)
3523{
3524 int err, fd;
3525 FILE *in;
3526 FILE *real;
3527 BZFILE *out;
3528 char buf[1024];
3529 size_t bufdata;
3530
3531 if(xmllistname == NULL)
3532 return;
3533 if((in = fopen(xmllistname, "r")) == NULL)
3534 {
3535 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3536 return;
3537 }
3538 if(xmlbz2listname != NULL)
3539 {
3540 unlink(xmlbz2listname);
3541 free(xmlbz2listname);
3542 }
3543 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3544 if((fd = mkstemp(xmlbz2listname)) < 0)
3545 {
3546 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3547 free(xmlbz2listname);
3548 xmlbz2listname = NULL;
3549 fclose(in);
3550 return;
3551 }
3552 if((real = fdopen(fd, "w")) == NULL)
3553 {
3554 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3555 close(fd);
3556 unlink(xmlbz2listname);
3557 free(xmlbz2listname);
3558 xmlbz2listname = NULL;
3559 fclose(in);
3560 return;
3561 }
3562 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3563 if(err != BZ_OK)
3564 {
3565 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3566 fclose(real);
3567 unlink(xmlbz2listname);
3568 free(xmlbz2listname);
3569 xmlbz2listname = NULL;
3570 fclose(in);
3571 return;
3572 }
3573 while(!feof(in))
3574 {
3575 bufdata = fread(buf, 1, sizeof(buf), in);
3576 BZ2_bzWrite(&err, out, buf, bufdata);
3577 }
3578 fclose(in);
3579 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3580 fclose(real);
3581}
3582
6305c428 3583static void listtimercb(int cancelled, void *uudata)
3584{
3585 listwritetimer = NULL;
3586 if(!cancelled)
3587 updatelists(1);
3588}
3589
3590static void updatelists(int now)
d3372da9 3591{
000ca725 3592 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3593 now = 1;
6305c428 3594 if(!now)
3595 {
3596 if(listwritetimer == NULL)
ddb3658e 3597 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
6305c428 3598 return;
3599 }
3600 if(listwritetimer != NULL)
3601 canceltimer(listwritetimer);
d3372da9 3602 updatehmlist();
3603 updatexmllist();
3604 updatexmlbz2list();
6305c428 3605}
3606
3607static int shareupdate(unsigned long long uusharesize, void *data)
3608{
3609 updatelists(0);
d3372da9 3610 return(0);
3611}
3612
7395a37f
FT		 3613static char *quotestr(char *str)
3614{
3615 unsigned char *buf;
3616 unsigned char *p;
3617 size_t bufsize, bufdata;
3618 wchar_t *wbuf;
3619 static char *enc = NULL;
3620 size_t encsize, encdata;
3621
3622 buf = NULL;
3623 bufsize = bufdata = 0;
3624 for(p = (unsigned char *)str; *p; p++)
3625 {
3626 if(*p == '\b')
3627 bufcat(buf, "\\b", 2);
3628 else if(*p == '\t')
3629 bufcat(buf, "\\t", 2);
3630 else if(*p == '\n')
3631 bufcat(buf, "\\n", 2);
3632 else if(*p == '\r')
3633 bufcat(buf, "\\r", 2);
3634 else if(*p == '\\')
3635 bufcat(buf, "\\\\", 2);
3636 else if(*p >= 32)
3637 addtobuf(buf, *p);
3638 else
3639 bprintf(buf, "\\x%02x", *p);
3640 }
3641 addtobuf(buf, 0);
3642 if(enc != NULL)
3643 free(enc);
3644 enc = NULL;
3645 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3646 {
3647 enc = icwcstombs(wbuf, NULL);
3648 free(wbuf);
3649 }
3650 if(enc == NULL)
3651 {
3652 encsize = encdata = 0;
3653 for(p = buf; *p; p++) {
3654 if(*p < 128)
3655 addtobuf(enc, *p);
3656 else
3657 bprintf(buf, "\\x%x", *p);
3658 }
3659 }
3660 free(buf);
3661 return(enc);
3662}
3663
c1928259 3664static void logunimpl(char *list, char *cmd, char *args)
7395a37f
FT		 3665{
3666 FILE *log;
3667
3668 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3669 {
3670 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3671 return;
3672 }
c1928259
FT		 3673 fputs(list, log);
3674 fputc('\t', log);
7395a37f
FT		 3675 fputs(quotestr(cmd), log);
3676 if(args != NULL)
3677 {
3678 fputc('\t', log);
3679 fputs(quotestr(args), log);
3680 }
3681 fputc('\n', log);
3682 fclose(log);
3683}
3684
d3372da9 3685static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3686{
3687 char *p;
3688 struct command *cmd;
3689
3690 if((p = strchr(qcmd->string, ' ')) != NULL)
3691 *(p++) = 0;
3692 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3693 {
3694 if(!strcmp(cmd->name, qcmd->string))
3695 break;
3696 }
3697 if(cmd->handler != NULL)
c1928259 3698 {
d3372da9 3699 cmd->handler(sk, data, qcmd->string, p);
c1928259
FT		 3700 } else if(confgetint("dc", "logunimpl")) {
3701 if(cmdlist == hubcmds)
3702 logunimpl("hub", qcmd->string, p);
3703 else if(cmdlist == peercmds)
3704 logunimpl("peer", qcmd->string, p);
3705 else
3706 logunimpl("other?!", qcmd->string, p);
3707 }
d3372da9 3708}
3709
3710static int run(void)
3711{
3712 struct fnetnode *fn, *nextfn;
3713 struct dchub *hub;
3714 struct dcpeer *peer, *nextpeer;
3715 struct qcommand *qcmd;
3716 int ret;
3717
3718 ret = 0;
3719 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3720 {
3721 nextfn = fn->next;
3722 if(fn->fnet != &dcnet)
3723 continue;
3724 if(fn->data == NULL)
3725 continue;
3726 hub = (struct dchub *)fn->data;
3727 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3728 {
3729 if(*qcmd->string == '$')
3730 {
ffa81d5f
FT		 3731 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3732 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
d3372da9 3733 } else if(*qcmd->string != 0) {
ffa81d5f 3734 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
d3372da9 3735 }
3736 freeqcmd(qcmd);
3737 ret = 1;
3738 break;
3739 }
3740 }
3741 for(peer = peers; peer != NULL; peer = nextpeer)
3742 {
3743 nextpeer = peer->next;
3744 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3745 {
1e9d82b1 3746 if(peer->timeout != NULL)
3747 canceltimer(peer->timeout);
3748 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3749 if(*qcmd->string == '$')
3750 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3751 freeqcmd(qcmd);
3752 ret = 1;
3753 break;
3754 }
3755 }
3756 return(ret);
3757}
3758
3759static void preinit(int hup)
3760{
3761 if(hup)
3762 return;
3763 regfnet(&dcnet);
3764}
3765
3766static int updateudpport(struct configvar *var, void *uudata)
3767{
3768 struct sockaddr_in addr;
3769 struct socket *newsock;
3770
3771 memset(&addr, 0, sizeof(addr));
3772 addr.sin_family = AF_INET;
3773 addr.sin_port = htons(var->val.num);
3774 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3775 {
3776 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3777 return(0);
3778 }
cab0b442 3779 newsock->readcb = udpread;
d3372da9 3780 if(udpsock != NULL)
3781 putsock(udpsock);
3782 udpsock = newsock;
3783 return(0);
3784}
3785
3786static int updatetcpport(struct configvar *var, void *uudata)
3787{
3788 struct sockaddr_in addr;
3789 struct socket *newsock;
3790
3791 memset(&addr, 0, sizeof(addr));
3792 addr.sin_family = AF_INET;
3793 addr.sin_port = htons(var->val.num);
3794 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3795 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3796 if(tcpsock != NULL)
3797 putsock(tcpsock);
3798 tcpsock = newsock;
3799 return(0);
3800}
3801
3802static int init(int hup)
3803{
3804 struct sockaddr_in addr;
3805
3806 if(!hup)
3807 {
3808 GCBREG(sharechangecb, shareupdate, NULL);
3809 if(udpsock != NULL)
3810 putsock(udpsock);
3811 if(tcpsock != NULL)
3812 putsock(tcpsock);
3813 addr.sin_family = AF_INET;
3814 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3815 addr.sin_port = htons(confgetint("dc", "udpport"));
3816 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3817 {
3818 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3819 return(1);
3820 }
cab0b442 3821 udpsock->readcb = udpread;
d3372da9 3822 addr.sin_port = htons(confgetint("dc", "tcpport"));
3823 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3824 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3825 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3826 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3827 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3828 }
3829 return(0);
3830}
3831
3832static void terminate(void)
3833{
3834 if(hmlistname != NULL)
3835 {
3836 unlink(hmlistname);
3837 free(hmlistname);
3838 }
3839 if(xmllistname != NULL)
3840 {
3841 unlink(xmllistname);
3842 free(xmllistname);
3843 }
3844 if(xmlbz2listname != NULL)
3845 {
3846 unlink(xmlbz2listname);
3847 free(xmlbz2listname);
3848 }
3849}
3850
3851static struct configvar myvars[] =
3852{
d9f89ef5 3853 /** Specifies the share description reported to other DC users. */
d3372da9 3854 {CONF_VAR_STRING, "desc", {.str = L""}},
d9f89ef5 3855 /** Specifies the speed reported to other DC users. Normal values
3856 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3857 * LAN(T1) or LAN(T3)*/
d3372da9 3858 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
d9f89ef5 3859 /** The e-mail address to report to other DC users. */
d3372da9 3860 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
d9f89ef5 3861 /** Specifies a specific UDP port to use for DC search results. If
3862 * left unspecified, a port is allocated dynamically. Useful for
3863 * NAT routers (see also the net.visibleipv4 address for those
3864 * cases). */
d3372da9 3865 {CONF_VAR_INT, "udpport", {.num = 0}},
d9f89ef5 3866 /** Specifies a specific TCP port to use for DC peer
3867 * connections. If left unspecified, a port is allocated
3868 * dynamically. Useful for NAT routers (see also the
3869 * net.visibleipv4 address for those cases). */
d3372da9 3870 {CONF_VAR_INT, "tcpport", {.num = 0}},
d9f89ef5 3871 /** If set to true, doldacond will do its best to emulate DC++
3872 * (currently v0.674). This should be left off if at all possible,
3873 * since turning it on will violate the rules of most hubs and
3874 * thus give hub owners an actual reason to kick you if it is
3875 * detected. It might be needed for some of the more bone-headed
3876 * hub owners, though. Note that DC++ emulation can also be turned
3877 * on or off for individual hubs, overriding this setting. */
1c4b02cd 3878 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
7395a37f
FT		 3879 /** Use for debugging. If set to true, doldacond will log all
3880 * unknown commands it receives, and their arguments, to
3881 * /tmp/dc-unimpl. */
3882 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
d3372da9 3883 {CONF_VAR_END}
3884};
3885
3886static struct module me =
3887{
3888 .conf =
3889 {
3890 .vars = myvars
3891 },
3892 .preinit = preinit,
3893 .init = init,
3894 .run = run,
3895 .terminate = terminate,
3896 .name = "dc"
3897};
3898
3899MODULE(me)
Dolda Connect